diff --git a/services/iaasalpha/src/stackit/iaasalpha/models/create_network_ipv4.py b/services/iaasalpha/src/stackit/iaasalpha/models/create_network_ipv4.py
index 47975eaa..a9a402f5 100644
--- a/services/iaasalpha/src/stackit/iaasalpha/models/create_network_ipv4.py
+++ b/services/iaasalpha/src/stackit/iaasalpha/models/create_network_ipv4.py
@@ -43,9 +43,19 @@ class CreateNetworkIPv4(BaseModel):
     """
 
     # data type: CreateNetworkIPv4WithPrefix
+    # BEGIN of the workaround until upstream issues are fixed:
+    # https://github.com/OpenAPITools/openapi-generator/issues/19034 from Jun 28, 2024
+    # and https://github.com/OpenAPITools/openapi-generator/issues/19842 from Oct 11, 2024
+    # Tracking issue on our side: https://jira.schwarz/browse/STACKITSDK-227
     oneof_schema_1_validator: Optional[CreateNetworkIPv4WithPrefix] = None
+    # END of the workaround
     # data type: CreateNetworkIPv4WithPrefixLength
+    # BEGIN of the workaround until upstream issues are fixed:
+    # https://github.com/OpenAPITools/openapi-generator/issues/19034 from Jun 28, 2024
+    # and https://github.com/OpenAPITools/openapi-generator/issues/19842 from Oct 11, 2024
+    # Tracking issue on our side: https://jira.schwarz/browse/STACKITSDK-227
     oneof_schema_2_validator: Optional[CreateNetworkIPv4WithPrefixLength] = None
+    # END of the workaround
     actual_instance: Optional[Union[CreateNetworkIPv4WithPrefix, CreateNetworkIPv4WithPrefixLength]] = None
     one_of_schemas: Set[str] = {"CreateNetworkIPv4WithPrefix", "CreateNetworkIPv4WithPrefixLength"}
 
diff --git a/services/iaasalpha/src/stackit/iaasalpha/models/create_network_ipv6.py b/services/iaasalpha/src/stackit/iaasalpha/models/create_network_ipv6.py
index 0d901410..56da6bcb 100644
--- a/services/iaasalpha/src/stackit/iaasalpha/models/create_network_ipv6.py
+++ b/services/iaasalpha/src/stackit/iaasalpha/models/create_network_ipv6.py
@@ -43,9 +43,19 @@ class CreateNetworkIPv6(BaseModel):
     """
 
     # data type: CreateNetworkIPv6WithPrefix
+    # BEGIN of the workaround until upstream issues are fixed:
+    # https://github.com/OpenAPITools/openapi-generator/issues/19034 from Jun 28, 2024
+    # and https://github.com/OpenAPITools/openapi-generator/issues/19842 from Oct 11, 2024
+    # Tracking issue on our side: https://jira.schwarz/browse/STACKITSDK-227
     oneof_schema_1_validator: Optional[CreateNetworkIPv6WithPrefix] = None
+    # END of the workaround
     # data type: CreateNetworkIPv6WithPrefixLength
+    # BEGIN of the workaround until upstream issues are fixed:
+    # https://github.com/OpenAPITools/openapi-generator/issues/19034 from Jun 28, 2024
+    # and https://github.com/OpenAPITools/openapi-generator/issues/19842 from Oct 11, 2024
+    # Tracking issue on our side: https://jira.schwarz/browse/STACKITSDK-227
     oneof_schema_2_validator: Optional[CreateNetworkIPv6WithPrefixLength] = None
+    # END of the workaround
     actual_instance: Optional[Union[CreateNetworkIPv6WithPrefix, CreateNetworkIPv6WithPrefixLength]] = None
     one_of_schemas: Set[str] = {"CreateNetworkIPv6WithPrefix", "CreateNetworkIPv6WithPrefixLength"}
 
diff --git a/services/iaasalpha/src/stackit/iaasalpha/models/route_destination.py b/services/iaasalpha/src/stackit/iaasalpha/models/route_destination.py
index ecb73e0b..b90bb8f8 100644
--- a/services/iaasalpha/src/stackit/iaasalpha/models/route_destination.py
+++ b/services/iaasalpha/src/stackit/iaasalpha/models/route_destination.py
@@ -39,9 +39,19 @@ class RouteDestination(BaseModel):
     """
 
     # data type: DestinationCIDRv4
+    # BEGIN of the workaround until upstream issues are fixed:
+    # https://github.com/OpenAPITools/openapi-generator/issues/19034 from Jun 28, 2024
+    # and https://github.com/OpenAPITools/openapi-generator/issues/19842 from Oct 11, 2024
+    # Tracking issue on our side: https://jira.schwarz/browse/STACKITSDK-227
     oneof_schema_1_validator: Optional[DestinationCIDRv4] = None
+    # END of the workaround
     # data type: DestinationCIDRv6
+    # BEGIN of the workaround until upstream issues are fixed:
+    # https://github.com/OpenAPITools/openapi-generator/issues/19034 from Jun 28, 2024
+    # and https://github.com/OpenAPITools/openapi-generator/issues/19842 from Oct 11, 2024
+    # Tracking issue on our side: https://jira.schwarz/browse/STACKITSDK-227
     oneof_schema_2_validator: Optional[DestinationCIDRv6] = None
+    # END of the workaround
     actual_instance: Optional[Union[DestinationCIDRv4, DestinationCIDRv6]] = None
     one_of_schemas: Set[str] = {"DestinationCIDRv4", "DestinationCIDRv6"}
 
diff --git a/services/iaasalpha/src/stackit/iaasalpha/models/route_nexthop.py b/services/iaasalpha/src/stackit/iaasalpha/models/route_nexthop.py
index 1b254c69..4aea0565 100644
--- a/services/iaasalpha/src/stackit/iaasalpha/models/route_nexthop.py
+++ b/services/iaasalpha/src/stackit/iaasalpha/models/route_nexthop.py
@@ -41,13 +41,33 @@ class RouteNexthop(BaseModel):
     """
 
     # data type: NexthopIPv4
+    # BEGIN of the workaround until upstream issues are fixed:
+    # https://github.com/OpenAPITools/openapi-generator/issues/19034 from Jun 28, 2024
+    # and https://github.com/OpenAPITools/openapi-generator/issues/19842 from Oct 11, 2024
+    # Tracking issue on our side: https://jira.schwarz/browse/STACKITSDK-227
     oneof_schema_1_validator: Optional[NexthopIPv4] = None
+    # END of the workaround
     # data type: NexthopIPv6
+    # BEGIN of the workaround until upstream issues are fixed:
+    # https://github.com/OpenAPITools/openapi-generator/issues/19034 from Jun 28, 2024
+    # and https://github.com/OpenAPITools/openapi-generator/issues/19842 from Oct 11, 2024
+    # Tracking issue on our side: https://jira.schwarz/browse/STACKITSDK-227
     oneof_schema_2_validator: Optional[NexthopIPv6] = None
+    # END of the workaround
     # data type: NexthopInternet
+    # BEGIN of the workaround until upstream issues are fixed:
+    # https://github.com/OpenAPITools/openapi-generator/issues/19034 from Jun 28, 2024
+    # and https://github.com/OpenAPITools/openapi-generator/issues/19842 from Oct 11, 2024
+    # Tracking issue on our side: https://jira.schwarz/browse/STACKITSDK-227
     oneof_schema_3_validator: Optional[NexthopInternet] = None
+    # END of the workaround
     # data type: NexthopBlackhole
+    # BEGIN of the workaround until upstream issues are fixed:
+    # https://github.com/OpenAPITools/openapi-generator/issues/19034 from Jun 28, 2024
+    # and https://github.com/OpenAPITools/openapi-generator/issues/19842 from Oct 11, 2024
+    # Tracking issue on our side: https://jira.schwarz/browse/STACKITSDK-227
     oneof_schema_4_validator: Optional[NexthopBlackhole] = None
+    # END of the workaround
     actual_instance: Optional[Union[NexthopBlackhole, NexthopIPv4, NexthopIPv6, NexthopInternet]] = None
     one_of_schemas: Set[str] = {"NexthopBlackhole", "NexthopIPv4", "NexthopIPv6", "NexthopInternet"}