Sonarqube fixes

Code was linted using sonarqube and fixes was made

Issue-ID: TEST-404
Change-Id: Id5874b8f4f392228743cd12657a8efcb1ded0b5b
Signed-off-by: Michal Jagiello <michal.jagiello@t-mobile.pl>

32 files changed, 196 insertions, 203 deletions

diff --git a/src/onapsdk/aai/aai_element.py b/src/onapsdk/aai/aai_element.py
index 2bfb565..613eb70 100644
--- a/src/onapsdk/aai/aai_element.py
+++ b/src/onapsdk/aai/aai_element.py
@@ -105,7 +105,7 @@ class AaiElement(OnapService):
     })
 
     @classmethod
-    def get_guis(cls) -> GuiItem:
+    def get_guis(cls) -> GuiList:
         """Retrieve the status of the AAI GUIs.
 
         Only one GUI is referenced for AAI
diff --git a/src/onapsdk/aai/business/customer.py b/src/onapsdk/aai/business/customer.py
index 1305a12..6df3f7a 100644
--- a/src/onapsdk/aai/business/customer.py
+++ b/src/onapsdk/aai/business/customer.py
@@ -28,9 +28,9 @@ from .service import ServiceInstance
 class ServiceSubscriptionCloudRegionTenantData:
     """Dataclass to store cloud regions and tenants data for service subscription."""
 
-    cloud_owner: str = None
-    cloud_region_id: str = None
-    tenant_id: str = None
+    cloud_owner: Optional[str] = None
+    cloud_region_id: Optional[str] = None
+    tenant_id: Optional[str] = None
 
 
 @dataclass
diff --git a/src/onapsdk/aai/business/network.py b/src/onapsdk/aai/business/network.py
index e36cf62..f5d5d42 100644
--- a/src/onapsdk/aai/business/network.py
+++ b/src/onapsdk/aai/business/network.py
@@ -21,7 +21,7 @@ from .instance import Instance
 class NetworkInstance(Instance):  # pylint: disable=too-many-instance-attributes
     """Network instance class."""
 
-    def __init__(self,  # pylint: disable=too-many-arguments, too-many-locals
+    def __init__(self,  # NOSONAR  # pylint: disable=too-many-arguments, too-many-locals
                  service_instance: "ServiceInstance",
                  network_id: str,
                  is_bound_to_vpn: bool,
@@ -49,7 +49,7 @@ class NetworkInstance(Instance):  # pylint: disable=too-many-instance-attributes
                  widget_model_version: str = None,
                  selflink: str = None,
                  operational_status: str = None,
-                 is_trunked: bool = None):
+                 is_trunked: bool = None) -> None:
         """Network instance object initialization.
 
         Args:
diff --git a/src/onapsdk/aai/business/pnf.py b/src/onapsdk/aai/business/pnf.py
index 9f5394f..d8ce746 100644
--- a/src/onapsdk/aai/business/pnf.py
+++ b/src/onapsdk/aai/business/pnf.py
@@ -25,7 +25,7 @@ if TYPE_CHECKING:
 class PnfInstance(Instance):  # pylint: disable=too-many-instance-attributes
     """Pnf instance class."""
 
-    def __init__(self,  # pylint: disable=too-many-arguments, too-many-locals
+    def __init__(self,  # NOSONAR  # pylint: disable=too-many-arguments, too-many-locals
                  service_instance: "ServiceInstance",
                  pnf_name: str,
                  in_maint: bool,
diff --git a/src/onapsdk/aai/business/service.py b/src/onapsdk/aai/business/service.py
index 12b5b4f..9c2e7f8 100644
--- a/src/onapsdk/aai/business/service.py
+++ b/src/onapsdk/aai/business/service.py
@@ -30,7 +30,9 @@ from .vnf import VnfInstance
 class ServiceInstance(Instance):  # pylint: disable=too-many-instance-attributes
     """Service instanve class."""
 
-    def __init__(self,  # pylint: disable=too-many-arguments, too-many-locals
+    ACTIVE_STATUS_MESSAGE = 'Service orchestration status must be "Active"'
+
+    def __init__(self,  # NOSONAR  # pylint: disable=too-many-arguments, too-many-locals
                  service_subscription: "ServiceSubscription",
                  instance_id: str,
                  instance_name: str = None,
@@ -150,7 +152,7 @@ class ServiceInstance(Instance):  # pylint: disable=too-many-instance-attributes
             Iterator[ Union[NetworkInstance, VnfInstance]]: [description]
 
         """
-        if not relationship_related_to_type in ["l3-network", "generic-vnf", "pnf"]:
+        if relationship_related_to_type not in ["l3-network", "generic-vnf", "pnf"]:
             msg = (
                 f'Invalid "relationship_related_to_type" value. '
                 f'Provided "{relationship_related_to_type}". '
@@ -167,7 +169,7 @@ class ServiceInstance(Instance):  # pylint: disable=too-many-instance-attributes
                     self)
 
     @classmethod
-    def create(cls, service_subscription: "ServiceSubscription",  # pylint: disable=too-many-arguments, too-many-locals
+    def create(cls, service_subscription: "ServiceSubscription",  # NOSONAR  # pylint: disable=too-many-arguments, too-many-locals
                instance_id: str,
                instance_name: str = None,
                service_type: str = None,
@@ -389,7 +391,7 @@ class ServiceInstance(Instance):  # pylint: disable=too-many-instance-attributes
 
         """
         if not self.active:
-            raise StatusError('Service orchestration status must be "Active"')
+            raise StatusError(self.ACTIVE_STATUS_MESSAGE)
 
         if a_la_carte:
             return VnfInstantiation.instantiate_ala_carte(
@@ -447,7 +449,7 @@ class ServiceInstance(Instance):  # pylint: disable=too-many-instance-attributes
 
         """
         if not self.active:
-            raise StatusError('Service orchestration status must be "Active"')
+            raise StatusError(self.ACTIVE_STATUS_MESSAGE)
 
         return PnfInstantiation.instantiate_macro(
             self,
@@ -497,7 +499,7 @@ class ServiceInstance(Instance):  # pylint: disable=too-many-instance-attributes
 
         """
         if not self.active:
-            raise StatusError('Service orchestration status must be "Active"')
+            raise StatusError(self.ACTIVE_STATUS_MESSAGE)
 
         return NetworkInstantiation.instantiate_ala_carte(
             self,
diff --git a/src/onapsdk/aai/business/vf_module.py b/src/onapsdk/aai/business/vf_module.py
index ac91560..817ba38 100644
--- a/src/onapsdk/aai/business/vf_module.py
+++ b/src/onapsdk/aai/business/vf_module.py
@@ -22,7 +22,7 @@ from .instance import Instance
 class VfModuleInstance(Instance):  # pylint: disable=too-many-instance-attributes
     """Vf module instance class."""
 
-    def __init__(self,  # pylint: disable=too-many-arguments, too-many-locals
+    def __init__(self,  # NOSONAR  # pylint: disable=too-many-arguments, too-many-locals
                  vnf_instance: "VnfInstance",
                  vf_module_id: str,
                  is_base_vf_module: bool,
diff --git a/src/onapsdk/aai/business/vnf.py b/src/onapsdk/aai/business/vnf.py
index 31762c9..48a4726 100644
--- a/src/onapsdk/aai/business/vnf.py
+++ b/src/onapsdk/aai/business/vnf.py
@@ -28,7 +28,7 @@ from .vf_module import VfModuleInstance
 class VnfInstance(Instance):  # pylint: disable=too-many-instance-attributes
     """VNF Instance class."""
 
-    def __init__(self,  # pylint: disable=too-many-arguments, too-many-locals
+    def __init__(self,  # NOSONAR  # pylint: disable=too-many-arguments, too-many-locals
                  service_instance: "ServiceInstance",
                  vnf_id: str,
                  vnf_type: str,
diff --git a/src/onapsdk/aai/cloud_infrastructure/cloud_region.py b/src/onapsdk/aai/cloud_infrastructure/cloud_region.py
index 240b7a2..ec78d96 100644
--- a/src/onapsdk/aai/cloud_infrastructure/cloud_region.py
+++ b/src/onapsdk/aai/cloud_infrastructure/cloud_region.py
@@ -36,8 +36,8 @@ class AvailabilityZone:
 
     name: str
     hypervisor_type: str
-    operational_status: str = None
-    resource_version: str = None
+    operational_status: Optional[str] = None
+    resource_version: Optional[str] = None
 
 
 @dataclass
@@ -49,22 +49,22 @@ class EsrSystemInfo:  # pylint: disable=too-many-instance-attributes
     password: str
     system_type: str
     resource_version: str
-    system_name: str = None
-    esr_type: str = None
-    vendor: str = None
-    version: str = None
-    service_url: str = None
-    protocol: str = None
-    ssl_cacert: str = None
+    system_name: Optional[str] = None
+    esr_type: Optional[str] = None
+    vendor: Optional[str] = None
+    version: Optional[str] = None
+    service_url: Optional[str] = None
+    protocol: Optional[str] = None
+    ssl_cacert: Optional[str] = None
     ssl_insecure: Optional[bool] = None
-    ip_address: str = None
-    port: str = None
-    cloud_domain: str = None
-    default_tenant: str = None
+    ip_address: Optional[str] = None
+    port: Optional[str] = None
+    cloud_domain: Optional[str] = None
+    default_tenant: Optional[str] = None
     passive: Optional[bool] = None
-    remote_path: str = None
-    system_status: str = None
-    openstack_region_id: str = None
+    remote_path: Optional[str] = None
+    system_status: Optional[str] = None
+    openstack_region_id: Optional[str] = None
 
 
 class CloudRegion(AaiResource, AaiResourceLinkToComplexMixin, AaiResourceLinkToProjectMixin):  # pylint: disable=too-many-instance-attributes
@@ -73,7 +73,7 @@ class CloudRegion(AaiResource, AaiResourceLinkToComplexMixin, AaiResourceLinkToP
     Represents A&AI cloud region object.
     """
 
-    def __init__(self,  # pylint: disable=too-many-arguments
+    def __init__(self,  # NOSONAR  # pylint: disable=too-many-arguments
                  cloud_owner: str,
                  cloud_region_id: str,
                  orchestration_disabled: bool,
@@ -558,7 +558,7 @@ class CloudRegion(AaiResource, AaiResourceLinkToComplexMixin, AaiResourceLinkToP
                     availability_zone_operational_status=availability_zone_operational_status)
         )
 
-    def add_esr_system_info(self,  # pylint: disable=too-many-arguments, too-many-locals
+    def add_esr_system_info(self,  # NOSONAR  # pylint: disable=too-many-arguments, too-many-locals
                             esr_system_info_id: str,
                             user_name: str,
                             password: str,
diff --git a/src/onapsdk/aai/cloud_infrastructure/complex.py b/src/onapsdk/aai/cloud_infrastructure/complex.py
index 6b2b74f..3cfd3cb 100644
--- a/src/onapsdk/aai/cloud_infrastructure/complex.py
+++ b/src/onapsdk/aai/cloud_infrastructure/complex.py
@@ -27,7 +27,7 @@ class Complex(AaiResource, AaiResourceLinkToGeoRegionMixin):  # pylint: disable=
     Collection of physical locations that can house cloud-regions.
     """
 
-    def __init__(self,  # pylint: disable=too-many-locals, too-many-arguments
+    def __init__(self,  # NOSONAR  # pylint: disable=too-many-locals, too-many-arguments
                  physical_location_id: str,
                  *,
                  name: str = "",
@@ -124,7 +124,7 @@ class Complex(AaiResource, AaiResourceLinkToGeoRegionMixin):  # pylint: disable=
                 f"{self.physical_location_id}")
 
     @classmethod
-    def create(cls,  # pylint: disable=too-many-locals, too-many-arguments
+    def create(cls,  # NOSONAR  # pylint: disable=too-many-locals, too-many-arguments
                physical_location_id: str,
                *,
                name: str = "",
@@ -189,7 +189,7 @@ class Complex(AaiResource, AaiResourceLinkToGeoRegionMixin):  # pylint: disable=
         return complex_object
 
     @classmethod
-    def update(cls,  # pylint: disable=too-many-locals, too-many-arguments
+    def update(cls,  # NOSONAR  # pylint: disable=too-many-locals, too-many-arguments
                physical_location_id: str,
                *,
                name: str = "",
diff --git a/src/onapsdk/aai/network/site_resource.py b/src/onapsdk/aai/network/site_resource.py
index 6804e65..4e1780a 100644
--- a/src/onapsdk/aai/network/site_resource.py
+++ b/src/onapsdk/aai/network/site_resource.py
@@ -25,7 +25,7 @@ from ..mixins.link_to_project import AaiResourceLinkToProjectMixin
 class SiteResource(AaiResource, AaiResourceLinkToComplexMixin, AaiResourceLinkToProjectMixin):  # pylint: disable=too-many-instance-attributes
     """Site resource class."""
 
-    def __init__(self,  # pylint: disable=too-many-locals, too-many-arguments
+    def __init__(self,  # NOSONAR  # pylint: disable=too-many-locals, too-many-arguments
                  site_resource_id: str,
                  *,
                  site_resource_name: str = "",
@@ -175,7 +175,7 @@ class SiteResource(AaiResource, AaiResourceLinkToComplexMixin, AaiResourceLinkTo
                             resource_version=site_resource_data.get("resource-version", ""))
 
     @classmethod
-    def create(cls,  # pylint: disable=too-many-arguments
+    def create(cls,  # NOSONAR  # pylint: disable=too-many-arguments
                site_resource_id: str,
                site_resource_name: Optional[str] = None,
                description: Optional[str] = None,
diff --git a/src/onapsdk/cds/blueprint.py b/src/onapsdk/cds/blueprint.py
index 2d6aa37..2916977 100644
--- a/src/onapsdk/cds/blueprint.py
+++ b/src/onapsdk/cds/blueprint.py
@@ -241,9 +241,9 @@ class Workflow(CdsElement):
         self.name: str = cba_workflow_name
         self.workflow_data: dict = cba_workflow_data
         self.blueprint: "Blueprint" = blueprint
-        self._steps: List[self.WorkflowStep] = None
-        self._inputs: List[self.WorkflowInput] = None
-        self._outputs: List[self.WorkflowOutput] = None
+        self._steps: Optional[List[self.WorkflowStep]] = None
+        self._inputs: Optional[List[self.WorkflowInput]] = None
+        self._outputs: Optional[List[self.WorkflowOutput]] = None
 
     def __repr__(self) -> str:
         """Representation of object.
@@ -425,7 +425,7 @@ class ResolvedTemplate(CdsElement):
             str: Retrieve resolved template url
 
         """
-        params_dict: Dict[str, str] = urlencode(dict(filter(lambda item: item[1] is not None, {
+        params_dict: str = urlencode(dict(filter(lambda item: item[1] is not None, {
             "bpName": self.blueprint.metadata.template_name,
             "bpVersion": self.blueprint.metadata.template_version,
             "artifactName": self.artifact_name,
@@ -534,9 +534,9 @@ class Blueprint(CdsElement):
         """
         super().__init__()
         self.cba_file_bytes: bytes = cba_file_bytes
-        self._cba_metadata: CbaMetadata = None
-        self._cba_mappings: MappingSet = None
-        self._cba_workflows: List[Workflow] = None
+        self._cba_metadata: Optional[CbaMetadata] = None
+        self._cba_mappings: Optional[MappingSet] = None
+        self._cba_workflows: Optional[List[Workflow]] = None
 
     @property
     def url(self) -> str:
diff --git a/src/onapsdk/cds/cds_element.py b/src/onapsdk/cds/cds_element.py
index 7a4b9c0..973e559 100644
--- a/src/onapsdk/cds/cds_element.py
+++ b/src/onapsdk/cds/cds_element.py
@@ -30,7 +30,7 @@ class CdsElement(OnapService, ABC):
     auth: tuple = settings.CDS_AUTH
 
     @classmethod
-    def get_guis(cls) -> GuiItem:
+    def get_guis(cls) -> GuiList:
         """Retrieve the status of the CDS GUIs.
 
         Only one GUI is referenced for CDS: CDS UI
diff --git a/src/onapsdk/configuration/global_settings.py b/src/onapsdk/configuration/global_settings.py
index 59a9242..1412203 100644
--- a/src/onapsdk/configuration/global_settings.py
+++ b/src/onapsdk/configuration/global_settings.py
@@ -25,20 +25,20 @@ AAI_URL                     = "https://aai.api.sparky.simpledemo.onap.org:30233"
 AAI_API_VERSION             = "v27"
 AAI_AUTH                    = "Basic QUFJOkFBSQ=="
 AAI_BULK_CHUNK              = 30
-CDS_URL                     = "http://portal.api.simpledemo.onap.org:30449"
+CDS_URL                     = "http://portal.api.simpledemo.onap.org:30449"  # NOSONAR
 CDS_AUTH                    = ("ccsdkapps", "ccsdkapps")
-CPS_URL                     = "http://portal.api.simpledemo.onap.org:8080"
+CPS_URL                     = "http://portal.api.simpledemo.onap.org:8080"  # NOSONAR
 CPS_AUTH                    = ("cpsuser", "cpsr0cks!")
 CPS_VERSION                 = "v2"
 MSB_URL                     = "https://msb.api.simpledemo.onap.org:30283"
-K8SPLUGIN_URL               = "http://k8splugin.api.simpledemo.onap.org:30455"
+K8SPLUGIN_URL               = "http://k8splugin.api.simpledemo.onap.org:30455"  # NOSONAR
 SDC_BE_URL                  = "https://sdc.api.be.simpledemo.onap.org:30204"
 SDC_FE_URL                  = "https://sdc.api.fe.simpledemo.onap.org:30207"
 SDC_AUTH                    = "Basic YWFpOktwOGJKNFNYc3pNMFdYbGhhazNlSGxjc2UyZ0F3ODR2YW9HR21KdlV5MlU="  # pylint: disable=line-too-long
 SDNC_URL                    = "https://sdnc.api.simpledemo.onap.org:30267"
 SDNC_AUTH                   = "Basic YWRtaW46S3A4Yko0U1hzek0wV1hsaGFrM2VIbGNzZTJnQXc4NHZhb0dHbUp2VXkyVQ=="  # pylint: disable=line-too-long
-SO_CATALOG_DB_ADAPTER_URL   = "http://so-catalog-db-adapter:8082"
-SO_URL                      = "http://so.api.simpledemo.onap.org:30277"
+SO_CATALOG_DB_ADAPTER_URL   = "http://so-catalog-db-adapter:8082"  # NOSONAR
+SO_URL                      = "http://so.api.simpledemo.onap.org:30277"  # NOSONAR
 SO_API_VERSION              = "v7"
 SO_AUTH                     = "Basic SW5mcmFQb3J0YWxDbGllbnQ6cGFzc3dvcmQxJA=="
 SO_CAT_DB_AUTH              = "Basic YnBlbDpwYXNzd29yZDEk"
@@ -46,8 +46,8 @@ VID_URL                     = "https://vid.api.simpledemo.onap.org:30200"
 VID_API_VERSION             = "/vid"
 CLAMP_URL                   = "https://clamp.api.simpledemo.onap.org:30258"
 CLAMP_AUTH                  = "Basic ZGVtb0BwZW9wbGUub3NhYWYub3JnOmRlbW8xMjM0NTYh"
-VES_URL                     = "http://ves.api.simpledemo.onap.org:30417"
-DMAAP_URL                   = "http://dmaap.api.simpledemo.onap.org:3904"
+VES_URL                     = "http://ves.api.simpledemo.onap.org:30417"  # NOSONAR
+DMAAP_URL                   = "http://dmaap.api.simpledemo.onap.org:3904"  # NOSONAR
 NBI_URL                     = "https://nbi.api.simpledemo.onap.org:30274"
 NBI_API_VERSION             = "/nbi/api/v4"
 DCAEMOD_URL                 = ""
diff --git a/src/onapsdk/k8s/definition.py b/src/onapsdk/k8s/definition.py
index 305bca2..5e7eecf 100644
--- a/src/onapsdk/k8s/definition.py
+++ b/src/onapsdk/k8s/definition.py
@@ -72,7 +72,7 @@ class Profile(DefinitionBase):
                  kubernetes_version: str,
                  labels: dict = None,
                  release_name: str = None,
-                 extra_resource_types: list = None) -> None:
+                 extra_resource_types: dict = None) -> None:
         """Profile object initialization.
 
         Args:
@@ -83,7 +83,7 @@ class Profile(DefinitionBase):
             namespace (str): Namespace that service is created in
             kubernetes_version (str): Required Kubernetes version
             labels (dict): Extra Labels for k8s resources
-            extra_resource_types (list): Extra k8s resources types (GVK) for status monitoring
+            extra_resource_types (dict): Extra k8s resources types (GVK) for status monitoring
         """
         super().__init__(rb_name, rb_version)
         self.profile_name: str = profile_name
diff --git a/src/onapsdk/k8s/instance.py b/src/onapsdk/k8s/instance.py
index 64726b9..f08733d 100644
--- a/src/onapsdk/k8s/instance.py
+++ b/src/onapsdk/k8s/instance.py
@@ -208,7 +208,7 @@ class Configuration(InstanceBase):
         """
         config: dict = self.send_message_json(
             "GET",
-            "Get Configuration",
+            "Get Configuration by version",
             f"{self.url}/version/{config_version}"
         )
         return self.__class__(
@@ -253,7 +253,7 @@ class Configuration(InstanceBase):
         """
         config: dict = self.send_message_json(
             "GET",
-            "Get Configuration",
+            "Get Configuration by tag",
             f"{self.url}/tag/{config_tag}"
         )
         return self.__class__(
@@ -526,7 +526,7 @@ class Instance(InstanceBase, QueryResourceStatusMixin):
 
         """
         for config in self.send_message_json("GET",
-                                             "Get configurations",
+                                             "Get all configurations",
                                              f"{self.url}/config"):
             yield self.config_class(
                 self.instance_id,
@@ -552,7 +552,7 @@ class Instance(InstanceBase, QueryResourceStatusMixin):
 
         config: dict = self.send_message_json(
             "GET",
-            "Get Configuration",
+            "Get Configuration by name",
             url
         )
         return self.config_class(
diff --git a/src/onapsdk/msb/esr.py b/src/onapsdk/msb/esr.py
index b29cfa4..4157f37 100644
--- a/src/onapsdk/msb/esr.py
+++ b/src/onapsdk/msb/esr.py
@@ -22,7 +22,7 @@ class ESR(MSB):
     base_url = f"{MSB.base_url}/api/aai-esr-server/v1/vims"
 
     @classmethod
-    def register_vim(cls,  # pylint: disable=too-many-arguments
+    def register_vim(cls,  # NOSONAR  # pylint: disable=too-many-arguments
                      cloud_owner: str,
                      cloud_region_id: str,
                      cloud_type: str,
diff --git a/src/onapsdk/nbi/nbi.py b/src/onapsdk/nbi/nbi.py
index 7afc718..ffcd62c 100644
--- a/src/onapsdk/nbi/nbi.py
+++ b/src/onapsdk/nbi/nbi.py
@@ -14,7 +14,7 @@
 #   limitations under the License.
 from abc import ABC
 from enum import Enum
-from typing import Iterator
+from typing import Iterator, Optional
 from uuid import uuid4
 
 from onapsdk.aai.business.customer import Customer
@@ -216,7 +216,7 @@ class Service(Nbi):
                       service.get("href"))
 
     @property
-    def customer(self) -> Customer:
+    def customer(self) -> Optional[Customer]:
         """Service order Customer object.
 
         Returns:
@@ -228,7 +228,7 @@ class Service(Nbi):
         return Customer.get_by_global_customer_id(self._customer_id)
 
     @property
-    def service_specification(self) -> ServiceSpecification:
+    def service_specification(self) -> Optional[ServiceSpecification]:
         """Service specification.
 
         Returns:
@@ -322,7 +322,7 @@ class ServiceOrder(Nbi, WaitForFinishMixin):  # pylint: disable=too-many-instanc
                 f"service_instance_name={self.service_instance_name}, state={self.state})")
 
     @property
-    def customer(self) -> Customer:
+    def customer(self) -> Optional[Customer]:
         """Get customer object used in service order.
 
         Returns:
@@ -337,7 +337,7 @@ class ServiceOrder(Nbi, WaitForFinishMixin):  # pylint: disable=too-many-instanc
         return self._customer
 
     @property
-    def service_specification(self) -> ServiceSpecification:
+    def service_specification(self) -> Optional[ServiceSpecification]:
         """Service order service specification used in order item.
 
         Returns:
diff --git a/src/onapsdk/onap_service.py b/src/onapsdk/onap_service.py
index 7b1dc17..06c358c 100644
--- a/src/onapsdk/onap_service.py
+++ b/src/onapsdk/onap_service.py
@@ -32,6 +32,8 @@ from onapsdk.exceptions import (APIError, ConnectionFailed, InvalidResponse,
 
 urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning)
 
+APPLICATION_JSON: str = "application/json"
+
 
 class OnapService(ABC):
     """
@@ -74,13 +76,13 @@ class OnapService(ABC):
                 yield ph_call()
 
     _logger: logging.Logger = logging.getLogger(__qualname__)
-    server: str = None
+    server: Optional[str] = None
     headers: Dict[str, str] = {
-        "Content-Type": "application/json",
-        "Accept": "application/json",
+        "Content-Type": APPLICATION_JSON,
+        "Accept": APPLICATION_JSON,
     }
     patch_headers: Dict[str, str] = headers.copy()
-    proxy: Dict[str, str] = None
+    proxy: Optional[Dict[str, str]] = None
     permanent_headers: PermanentHeadersCollection = PermanentHeadersCollection()
 
     def __init_subclass__(cls):
@@ -95,7 +97,7 @@ class OnapService(ABC):
         """Initialize the service."""
 
     @classmethod
-    def send_message(cls, method: str, action: str, url: str,  # pylint: disable=too-many-locals
+    def send_message(cls, method: str, action: str, url: str,  # pylint: disable=too-many-locals  # NOSONAR
                      **kwargs) -> Union[requests.Response, None]:
         """
         Send a message to an ONAP service.
@@ -161,7 +163,7 @@ class OnapService(ABC):
                 cls.server, action,
                 response.text if (response is not None and
                                   response.headers.get("Content-Type", "") in \
-                                      ["application/json", "text/plain"]) else "n/a")
+                                      [APPLICATION_JSON, "text/plain"]) else "n/a")
 
             response.raise_for_status()
             return response
@@ -285,7 +287,7 @@ class OnapService(ABC):
             backoff_factor=backoff_factor,
         )
         adapter = HTTPAdapter(max_retries=retry)
-        session.mount('http://', adapter)
+        session.mount('http://', adapter)  # NOSONAR
         session.mount('https://', adapter)
         return session
 
diff --git a/src/onapsdk/sdc/__init__.py b/src/onapsdk/sdc/__init__.py
index f359344..cac1356 100644
--- a/src/onapsdk/sdc/__init__.py
+++ b/src/onapsdk/sdc/__init__.py
@@ -232,7 +232,7 @@ class SDC(OnapService, ABC):
         return True
 
     @classmethod
-    def get_guis(cls) -> GuiItem:
+    def get_guis(cls) -> GuiList:
         """Retrieve the status of the SDC GUIs.
 
         Only one GUI is referenced for SDC
@@ -258,9 +258,9 @@ class SdcOnboardable(SDC, ABC):
     def __init__(self, name: str = None) -> None:
         """Initialize the object."""
         super().__init__(name)
-        self._identifier: str = None
-        self._status: str = None
-        self._version: str = None
+        self._identifier: Optional[str] = None
+        self._status: Optional[str] = None
+        self._version: Optional[str] = None
 
     @property
     def identifier(self) -> str:
diff --git a/src/onapsdk/sdc/category_management.py b/src/onapsdk/sdc/category_management.py
index c2d63b4..c78a909 100644
--- a/src/onapsdk/sdc/category_management.py
+++ b/src/onapsdk/sdc/category_management.py
@@ -15,7 +15,7 @@
 
 import json
 from abc import ABC, abstractmethod
-from typing import Any, Dict, List
+from typing import Any, Dict, List, Optional
 
 from onapsdk.configuration import settings
 from onapsdk.exceptions import ResourceNotFound
@@ -42,14 +42,14 @@ class BaseCategory(SDC, ABC):  # pylint: disable=too-many-instance-attributes
 
         """
         super().__init__(name)
-        self.normalized_name: str = None
-        self.unique_id: str = None
-        self.icons: List[str] = None
-        self.subcategories: List[Dict[str, str]] = None
-        self.version: str = None
-        self.owner_id: str = None
-        self.empty: bool = None
-        self.type: str = None
+        self.normalized_name: Optional[str] = None
+        self.unique_id: Optional[str] = None
+        self.icons: Optional[List[str]] = None
+        self.subcategories: Optional[List[Dict[str, str]]] = None
+        self.version: Optional[str] = None
+        self.owner_id: Optional[str] = None
+        self.empty: Optional[str] = None
+        self.type: Optional[str] = None
 
     @classmethod
     def _get_all_url(cls) -> str:
@@ -235,8 +235,9 @@ class ResourceCategory(BaseCategory):
         category_obj: "ResourceCategory" = super().get(name=name)
         if not subcategory:
             return category_obj
-        filtered_subcategories: Dict[str, str] = list(filter(lambda x: x["name"] == subcategory,
-                                                             category_obj.subcategories))
+        filtered_subcategories: List[Dict[str, str]] = list(
+            filter(lambda x: x["name"] == subcategory,
+                   category_obj.subcategories))
         if not filtered_subcategories:
             raise ResourceNotFound(f"Subcategory {subcategory} does not exist.")
         category_obj.subcategories = filtered_subcategories
diff --git a/src/onapsdk/sdc/properties.py b/src/onapsdk/sdc/properties.py
index 519772c..5551efc 100644
--- a/src/onapsdk/sdc/properties.py
+++ b/src/onapsdk/sdc/properties.py
@@ -117,7 +117,7 @@ class Property:  # pylint: disable=too-many-instance-attributes, too-few-public-
         return self.name == obj.name and self.property_type == obj.property_type
 
     @property
-    def input(self) -> Input:
+    def input(self) -> Optional[Input]:
         """Property input.
 
         Returns property Input object.
diff --git a/src/onapsdk/sdc/sdc_resource.py b/src/onapsdk/sdc/sdc_resource.py
index ea25b31..8d693ab 100644
--- a/src/onapsdk/sdc/sdc_resource.py
+++ b/src/onapsdk/sdc/sdc_resource.py
@@ -14,7 +14,7 @@
 #   limitations under the License.
 import logging
 from abc import ABC
-from typing import Any, Dict, Iterator, List, Union
+from typing import Any, Dict, Iterator, List, Optional, Union
 import base64
 import time
 
@@ -47,8 +47,8 @@ class SdcResource(SdcOnboardable, ABC):  # pylint: disable=too-many-instance-att
         """Initialize the object."""
         super().__init__(name)
         self.version_filter: str = version
-        self._unique_uuid: str = None
-        self._unique_identifier: str = None
+        self._unique_uuid: Optional[str] = None
+        self._unique_identifier: Optional[str] = None
         self._resource_type: str = "resources"
         self._properties_to_add: List[Property] = properties or []
         self._inputs_to_add: Union[Property, NestedInput] = inputs or []
@@ -106,7 +106,7 @@ class SdcResource(SdcOnboardable, ABC):  # pylint: disable=too-many-instance-att
         """Load Object information from SDC."""
         self.exists()
 
-    def deep_load(self) -> None:
+    def deep_load(self) -> None:  # NOSONAR
         """Deep load Object informations from SDC."""
         url = (
             f"{self.base_front_url}/sdc1/feProxy/rest/v1/"
@@ -334,7 +334,7 @@ class SdcResource(SdcOnboardable, ABC):  # pylint: disable=too-many-instance-att
     # pylint: disable=too-many-return-statements
     @staticmethod
     def _parse_sdc_status(sdc_status: str, distribution_state: str,
-                          logger: logging.Logger) -> str:
+                          logger: logging.Logger) -> Optional[str]:
         """
         Parse SDC status in order to normalize it.
 
diff --git a/src/onapsdk/sdc/service.py b/src/onapsdk/sdc/service.py
index 7f195a5..0457215 100644
--- a/src/onapsdk/sdc/service.py
+++ b/src/onapsdk/sdc/service.py
@@ -170,15 +170,15 @@ class Service(SdcResource):  # pylint: disable=too-many-instance-attributes, too
             self.category_name = sdc_values["category"]
         self.resources = resources or []
         self._instantiation_type: Optional[ServiceInstantiationType] = instantiation_type
-        self._distribution_id: str = None
-        self._distributed: bool = False
+        self._distribution_id: Optional[str] = None
+        self._distributed: Optional[bool] = False
         self._resource_type: str = "services"
-        self._tosca_model: bytes = None
-        self._tosca_template: str = None
-        self._vnfs: list = None
-        self._pnfs: list = None
-        self._networks: list = None
-        self._vf_modules: list = None
+        self._tosca_model: Optional[bytes] = None
+        self._tosca_template: Optional[str] = None
+        self._vnfs: Optional[list] = None
+        self._pnfs: Optional[list] = None
+        self._networks: Optional[list] = None
+        self._vf_modules: Optional[list] = None
 
     @classmethod
     def get_by_unique_uuid(cls, unique_uuid: str) -> "Service":
@@ -332,33 +332,32 @@ class Service(SdcResource):  # pylint: disable=too-many-instance-attributes, too
             model_instance_name=self.name,
             component=component
         )
-        if node_template_type is Vnf:
-            if component.group_instances:
-                for vf_module in component.group_instances:
-                    if not any([property_def["name"] == "vf_module_label"] and \
-                            property_def["value"] == "base_template_dummy_ignore" for \
-                                property_def in vf_module["properties"]):
-                        node_template.vf_modules.append(VfModule(
-                            name=vf_module["name"],
-                            group_type=vf_module["type"],
-                            model_name=vf_module["groupName"],
-                            model_version_id=vf_module["groupUUID"],
-                            model_invariant_uuid=vf_module["invariantUUID"],
-                            model_version=vf_module["version"],
-                            model_customization_id=vf_module["customizationUUID"],
-                            properties=(
-                                Property(
-                                    name=property_def["name"],
-                                    property_type=property_def["type"],
-                                    description=property_def["description"],
-                                    value=property_def["value"]
-                                ) for property_def in vf_module["properties"] \
-                                    if property_def["value"] and not (
-                                        property_def["name"] == "vf_module_label" and \
-                                            property_def["value"] == "base_template_dummy_ignore"
-                                    )
-                            )
-                        ))
+        if node_template_type is Vnf and component.group_instances:
+            for vf_module in component.group_instances:
+                if not any([property_def["name"] == "vf_module_label"] and \
+                        property_def["value"] == "base_template_dummy_ignore" for \
+                            property_def in vf_module["properties"]):
+                    node_template.vf_modules.append(VfModule(
+                        name=vf_module["name"],
+                        group_type=vf_module["type"],
+                        model_name=vf_module["groupName"],
+                        model_version_id=vf_module["groupUUID"],
+                        model_invariant_uuid=vf_module["invariantUUID"],
+                        model_version=vf_module["version"],
+                        model_customization_id=vf_module["customizationUUID"],
+                        properties=(
+                            Property(
+                                name=property_def["name"],
+                                property_type=property_def["type"],
+                                description=property_def["description"],
+                                value=property_def["value"]
+                            ) for property_def in vf_module["properties"] \
+                                if property_def["value"] and not (
+                                    property_def["name"] == "vf_module_label" and \
+                                        property_def["value"] == "base_template_dummy_ignore"
+                                )
+                        )
+                    ))
         return node_template
 
     def __has_component_type(self, origin_type: str) -> bool:
@@ -629,7 +628,7 @@ class Service(SdcResource):  # pylint: disable=too-many-instance-attributes, too
         except BadZipFile as exc:
             self._logger.exception(exc)
 
-    def _check_distributed(self) -> bool:
+    def _check_distributed(self) -> None:
         """Check if service is distributed and update status accordingly."""
         url = f"{self._base_create_url()}/services/distribution/{self.distribution_id}"
         headers = headers_sdc_creator(SdcResource.headers)
@@ -656,7 +655,7 @@ class Service(SdcResource):  # pylint: disable=too-many-instance-attributes, too
         self._distributed = True
 
     def _update_components_status(self, status: Dict[str, bool],
-                                  result: Response) -> Dict[str, bool]:
+                                  result: Dict[str, Any]) -> Dict[str, bool]:
         """Update components distribution status."""
         distrib_list = result['distributionStatusList']
         self._logger.debug("[SDC][Get Distribution] distrib_list = %s",
diff --git a/src/onapsdk/sdc/vsp.py b/src/onapsdk/sdc/vsp.py
index 07b8d1e..a600252 100644
--- a/src/onapsdk/sdc/vsp.py
+++ b/src/onapsdk/sdc/vsp.py
@@ -18,7 +18,7 @@ from typing import BinaryIO
 from typing import Callable
 from typing import Dict
 
-from onapsdk.exceptions import APIError, ParameterError
+from onapsdk.exceptions import ParameterError
 from onapsdk.sdc.sdc_element import SdcElement
 from onapsdk.sdc.vendor import Vendor
 import onapsdk.constants as const
@@ -42,8 +42,8 @@ class Vsp(SdcElement): # pylint: disable=too-many-instance-attributes
     VSP_PATH = "vendor-software-products"
     headers = headers_sdc_creator(SdcElement.headers)
 
-    def __init__(self, name: str = None, package: BinaryIO = None,
-                 vendor: Vendor = None):
+    def __init__(self, name: Optional[str] = None, package: Optional[BinaryIO] = None,
+                 vendor: Optional[Vendor] = None):
         """
         Initialize vsp object.
 
@@ -52,10 +52,10 @@ class Vsp(SdcElement): # pylint: disable=too-many-instance-attributes
 
         """
         super().__init__()
-        self._csar_uuid: str = None
-        self._vendor: Vendor = vendor or None
+        self._csar_uuid: Optional[str] = None
+        self._vendor: Optional[Vendor] = vendor
         self.name: str = name or "ONAP-test-VSP"
-        self.package = package or None
+        self.package: Optional[BinaryIO] = package
 
     @property
     def status(self):
@@ -192,26 +192,11 @@ class Vsp(SdcElement): # pylint: disable=too-many-instance-attributes
         headers.pop("Content-Type")
         headers["Accept-Encoding"] = "gzip, deflate"
         data = {'upload': package_to_upload}
-        upload_result = self.send_message('POST',
-                                          'upload ZIP for Vsp',
-                                          url,
-                                          headers=headers,
-                                          files=data)
-        if upload_result:
-            # TODO https://jira.onap.org/browse/SDC-3505  pylint: disable=W0511
-            response_json = json.loads(upload_result.text)
-            if response_json["status"] != "Success":
-                self._logger.error(
-                    "an error occured during file upload for Vsp %s",
-                    self.name)
-                raise APIError(response_json)
-            # End TODO https://jira.onap.org/browse/SDC-3505
-            self._logger.info("Files for Vsp %s have been uploaded",
-                              self.name)
-        else:
-            self._logger.error(
-                "an error occured during file upload for Vsp %s",
-                self.name)
+        self.send_message('POST',
+                          'upload ZIP for Vsp',
+                          url,
+                          headers=headers,
+                          files=data)
 
     def _validate_action(self):
         """Do validate for real."""
diff --git a/src/onapsdk/sdnc/sdnc_element.py b/src/onapsdk/sdnc/sdnc_element.py
index 84f56d9..1644af7 100644
--- a/src/onapsdk/sdnc/sdnc_element.py
+++ b/src/onapsdk/sdnc/sdnc_element.py
@@ -23,7 +23,7 @@ class SdncElement(OnapService):
     base_url = settings.SDNC_URL
 
     @classmethod
-    def get_guis(cls) -> GuiItem:
+    def get_guis(cls) -> GuiList:
         """Retrieve the status of the SDNC GUIs.
 
         There are 2 GUIS
diff --git a/src/onapsdk/sdnc/topology.py b/src/onapsdk/sdnc/topology.py
index 2b79ec9..8cc3e5e 100644
--- a/src/onapsdk/sdnc/topology.py
+++ b/src/onapsdk/sdnc/topology.py
@@ -20,6 +20,12 @@ from onapsdk.utils.jinja import jinja_env
 from .sdnc_element import SdncElement
 
 
+NETCONF_NODE_TOPOLOGY_HOST: str = "netconf-node-topology:host"
+NETCONF_NODE_TOPOLOGY_PORT: str = "netconf-node-topology:port"
+NETCONF_NODE_TOPOLOGY_USERNAME: str = "netconf-node-topology:username"
+NETCONF_NODE_TOPOLOGY_PASSWORD: str = "netconf-node-topology:password"
+
+
 class Node(SdncElement):
     """SDNC Node."""
 
@@ -76,10 +82,10 @@ class Node(SdncElement):
         node_json_template = {
             "node": {
                 "node-id": "",
-                "netconf-node-topology:host": "",
-                "netconf-node-topology:port": 0,
-                "netconf-node-topology:username": "",
-                "netconf-node-topology:password": ""
+                NETCONF_NODE_TOPOLOGY_HOST: "",
+                NETCONF_NODE_TOPOLOGY_PORT: 0,
+                NETCONF_NODE_TOPOLOGY_USERNAME: "",
+                NETCONF_NODE_TOPOLOGY_PASSWORD: ""
             }
         }
         self.send_message(
@@ -109,10 +115,10 @@ class Node(SdncElement):
         node_json_template = {
             "node": {
                 "node-id": "",
-                "netconf-node-topology:host": "",
-                "netconf-node-topology:port": 0,
-                "netconf-node-topology:username": "",
-                "netconf-node-topology:password": ""
+                NETCONF_NODE_TOPOLOGY_HOST: "",
+                NETCONF_NODE_TOPOLOGY_PORT: 0,
+                NETCONF_NODE_TOPOLOGY_USERNAME: "",
+                NETCONF_NODE_TOPOLOGY_PASSWORD: ""
             }
         }
         self.send_message(
@@ -234,10 +240,10 @@ class Topology(SdncElement):
         try:
             node = node_object["network-topology:node"][0]
             return Node(node_id=node["node-id"],
-                        host=node["netconf-node-topology:host"],
-                        port=node["netconf-node-topology:port"],
-                        username=node["netconf-node-topology:username"],
-                        password=node["netconf-node-topology:password"],
+                        host=node[NETCONF_NODE_TOPOLOGY_HOST],
+                        port=node[NETCONF_NODE_TOPOLOGY_PORT],
+                        username=node[NETCONF_NODE_TOPOLOGY_USERNAME],
+                        password=node[NETCONF_NODE_TOPOLOGY_PASSWORD],
                         topology_id=self.topology_id)
         except KeyError:
             self._logger.error("Error. Node creation skipped.")
@@ -259,10 +265,10 @@ class Topology(SdncElement):
         for node in nodes:
             try:
                 yield Node(node_id=node["node-id"],
-                           host=node["netconf-node-topology:host"],
-                           port=node["netconf-node-topology:port"],
-                           username=node["netconf-node-topology:username"],
-                           password=node["netconf-node-topology:password"],
+                           host=node[NETCONF_NODE_TOPOLOGY_HOST],
+                           port=node[NETCONF_NODE_TOPOLOGY_PORT],
+                           username=node[NETCONF_NODE_TOPOLOGY_USERNAME],
+                           password=node[NETCONF_NODE_TOPOLOGY_PASSWORD],
                            topology_id=self.topology_id)
             except KeyError:
                 self._logger.error("Error. Node creation skipped. KeyError")
diff --git a/src/onapsdk/so/instantiation.py b/src/onapsdk/so/instantiation.py
index 2ca25c2..084a112 100644
--- a/src/onapsdk/so/instantiation.py
+++ b/src/onapsdk/so/instantiation.py
@@ -136,8 +136,8 @@ class VnfParameters:
     """
 
     name: str
-    vnf_parameters: Iterable["InstantiationParameter"] = None
-    vfmodule_parameters: Iterable["VfmoduleParameters"] = None
+    vnf_parameters: Optional[Iterable["InstantiationParameter"]] = None
+    vfmodule_parameters: Optional[Iterable["VfmoduleParameters"]] = None
 
 @dataclass
 class VfmoduleParameters:
@@ -147,7 +147,7 @@ class VfmoduleParameters:
     """
 
     name: str
-    vfmodule_parameters: Iterable["InstantiationParameter"] = None
+    vfmodule_parameters: Optional[Iterable["InstantiationParameter"]] = None
 
 
 @dataclass
@@ -194,7 +194,7 @@ class Subnet:  # pylint: disable=too-many-instance-attributes
     name: str
     start_address: str
     gateway_address: str
-    role: str = None
+    role: Optional[str] = None
     cidr_mask: str = "24"
     ip_version: str = "4"
     dhcp_enabled: bool = False
@@ -384,7 +384,7 @@ class VnfInstantiation(NodeTemplateInstantiation):  # pylint: disable=too-many-a
         self.vnf = vnf
 
     @classmethod
-    def create_from_request_response(cls, request_response: dict) -> "VnfInstantiation":
+    def create_from_request_response(cls, request_response: dict) -> "VnfInstantiation":  # NOSONAR
         """Create VNF instantiation object based on request details.
 
         Raises:
@@ -399,7 +399,7 @@ class VnfInstantiation(NodeTemplateInstantiation):  # pylint: disable=too-many-a
         """
         if request_response.get("request", {}).get("requestScope") == "vnf" and \
             request_response.get("request", {}).get("requestType") == "createInstance":
-            service: SdcService = None
+            service: Optional[SdcService] = None
             for related_instance in request_response.get("request", {}).get("requestDetails", {})\
                     .get("relatedInstanceList", []):
                 if related_instance.get("relatedInstance", {}).get("modelInfo", {})\
@@ -408,7 +408,7 @@ class VnfInstantiation(NodeTemplateInstantiation):  # pylint: disable=too-many-a
                         .get("modelInfo", {}).get("modelName"))
             if not service:
                 raise ResourceNotFound("No related service in Vnf instance details response")
-            vnf: Vnf = None
+            vnf: Optional[Vnf] = None
             for service_vnf in service.vnfs:
                 if service_vnf.name == request_response.get("request", {})\
                     .get("requestDetails", {}).get("modelInfo", {}).get("modelCustomizationName"):
@@ -725,7 +725,7 @@ class PnfInstantiation(NodeTemplateInstantiation):  # pylint: disable=too-many-a
         """
         if request_response.get("request", {}).get("requestScope") == "pnf" and \
             request_response.get("request", {}).get("requestType") == "createInstance":
-            service: SdcService = None
+            service: Optional[SdcService] = None
             for related_instance in request_response.get("request", {}).get("requestDetails", {})\
                     .get("relatedInstanceList", []):
                 if related_instance.get("relatedInstance", {}).get("modelInfo", {})\
@@ -734,7 +734,7 @@ class PnfInstantiation(NodeTemplateInstantiation):  # pylint: disable=too-many-a
                         .get("modelInfo", {}).get("modelName"))
             if not service:
                 raise ResourceNotFound("No related service in Pnf instance details response")
-            pnf: Pnf = None
+            pnf: Optional[Pnf] = None
             for service_pnf in service.pnfs:
                 if service_pnf.name == request_response.get("request", {})\
                     .get("requestDetails", {}).get("modelInfo", {}).get("modelCustomizationName"):
@@ -969,7 +969,7 @@ class ServiceInstantiation(Instantiation):  # pylint: disable=too-many-ancestors
 
     # pylint: disable=too-many-arguments, too-many-locals
     @classmethod
-    def instantiate_macro(cls,
+    def instantiate_macro(cls,  # NOSONAR
                           sdc_service: "SdcService",
                           customer: "Customer",
                           owning_entity: OwningEntity,
diff --git a/src/onapsdk/so/so_db_adapter.py b/src/onapsdk/so/so_db_adapter.py
index 31a93fa..57c5f33 100644
--- a/src/onapsdk/so/so_db_adapter.py
+++ b/src/onapsdk/so/so_db_adapter.py
@@ -28,7 +28,7 @@ class IdentityService:  # pylint: disable=too-many-instance-attributes
     """Class to store identity service details."""
 
     identity_id: str
-    url: str = "http://1.2.3.4:5000/v2.0"
+    url: str = "http://1.2.3.4:5000/v2.0"  # NOSONAR
     mso_id: str = "onapsdk_user"
     mso_pass: str = "mso_pass_onapsdk"
     project_domain_name: str = "NULL"
diff --git a/src/onapsdk/so/so_element.py b/src/onapsdk/so/so_element.py
index 5c00654..e975cd9 100644
--- a/src/onapsdk/so/so_element.py
+++ b/src/onapsdk/so/so_element.py
@@ -16,7 +16,7 @@ import json
 from abc import ABC
 from dataclasses import dataclass
 from enum import Enum
-from typing import Dict
+from typing import Dict, Optional
 
 from onapsdk.configuration import settings
 from onapsdk.sdc.service import Service
@@ -32,11 +32,11 @@ from onapsdk.utils.gui import GuiItem, GuiList
 class SoElement(OnapService):
     """Mother Class of all SO elements."""
 
-    name: str = None
+    name: Optional[str] = None
     _server: str = "SO"
     base_url = settings.SO_URL
     api_version = settings.SO_API_VERSION
-    _status: str = None
+    _status: Optional[str] = None
 
     @property
     def headers(self):
@@ -111,7 +111,7 @@ class SoElement(OnapService):
                 f"{cls.api_version}/serviceInstances")
 
     @classmethod
-    def get_guis(cls) -> GuiItem:
+    def get_guis(cls) -> GuiList:
         """Retrieve the status of the SO GUIs.
 
         Only one GUI is referenced for SO: SO monitor
diff --git a/src/onapsdk/utils/gui.py b/src/onapsdk/utils/gui.py
index 421e966..b5a71cb 100644
--- a/src/onapsdk/utils/gui.py
+++ b/src/onapsdk/utils/gui.py
@@ -26,10 +26,10 @@ class GuiItem:
 class GuiList:
     """Class to list all the GUIs."""
 
-    guilist: List[GuiItem]
+    guis: List[GuiItem]
 
     def add(self, element):
         """Add a GUi to GUI list."""
         if not isinstance(element, GuiItem):
             raise AttributeError
-        self.guilist.append(element)
+        self.guis.append(element)
diff --git a/src/onapsdk/utils/headers_creator.py b/src/onapsdk/utils/headers_creator.py
index 75fc457..7df3ffb 100644
--- a/src/onapsdk/utils/headers_creator.py
+++ b/src/onapsdk/utils/headers_creator.py
@@ -223,7 +223,7 @@ def headers_sdc_artifact_upload(base_header: Dict[str, str], data: str):
     headers["Accept"] = "application/json, text/plain, */*"
     headers["Accept-Encoding"] = "gzip, deflate, br"
     headers["Content-Type"] = "application/json; charset=UTF-8"
-    md5_content = hashlib.new('md5', data.encode('UTF-8'),        # nosec
+    md5_content = hashlib.new('md5', data.encode('UTF-8'),        # nosec  # NOSONAR
                               usedforsecurity=False).hexdigest()  # nosec
     content = base64.b64encode(md5_content.encode('ascii')).decode('UTF-8')
     headers["Content-MD5"] = content
diff --git a/src/onapsdk/vid/vid.py b/src/onapsdk/vid/vid.py
index 31cb92e..8abef6b 100644
--- a/src/onapsdk/vid/vid.py
+++ b/src/onapsdk/vid/vid.py
@@ -20,6 +20,10 @@ from onapsdk.onap_service import OnapService
 from onapsdk.utils.jinja import jinja_env
 
 
+WARN_MSG = ("VID is deprecated and shouldn't be used! "
+            "It's not a part of the ONAP release since Istanbul.")
+
+
 class Vid(OnapService, ABC):
     """VID base class."""
 
@@ -32,8 +36,7 @@ class Vid(OnapService, ABC):
         Args:
             name (str): Resource name
         """
-        warn("VID is deprecated and shouldn't be used! "
-             "It's not a part of the ONAP release since Istanbul.")
+        warn(WARN_MSG)
         super().__init__()
         self.name: str = name
 
@@ -57,8 +60,7 @@ class Vid(OnapService, ABC):
             Vid: Created VID resource
 
         """
-        warn("VID is deprecated and shouldn't be used! "
-             "It's not a part of the ONAP release since Istanbul.")
+        warn(WARN_MSG)
         cls.send_message(
             "POST",
             f"Declare VID resource with {name} name",
@@ -81,8 +83,7 @@ class OwningEntity(Vid):
             str: Url used for ownint entity creation
 
         """
-        warn("VID is deprecated and shouldn't be used! "
-             "It's not a part of the ONAP release since Istanbul.")
+        warn(WARN_MSG)
         return f"{cls.base_url}{cls.api_version}/maintenance/category_parameter/owningEntity"
 
 
@@ -97,8 +98,7 @@ class Project(Vid):
             str: Url used for project creation
 
         """
-        warn("VID is deprecated and shouldn't be used! "
-             "It's not a part of the ONAP release since Istanbul.")
+        warn(WARN_MSG)
         return f"{cls.base_url}{cls.api_version}/maintenance/category_parameter/project"
 
 
@@ -113,8 +113,7 @@ class LineOfBusiness(Vid):
             str: Url used for line of business creation
 
         """
-        warn("VID is deprecated and shouldn't be used! "
-             "It's not a part of the ONAP release since Istanbul.")
+        warn(WARN_MSG)
         return f"{cls.base_url}{cls.api_version}/maintenance/category_parameter/lineOfBusiness"
 
 
@@ -129,6 +128,5 @@ class Platform(Vid):
             str: Url used for platform creation
 
         """
-        warn("VID is deprecated and shouldn't be used! "
-             "It's not a part of the ONAP release since Istanbul.")
+        warn(WARN_MSG)
         return f"{cls.base_url}{cls.api_version}/maintenance/category_parameter/platform"