How To Fix /IWBEP/CM_V4_MED080 - Complex type '&1' has not allowed key property '&2'

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_V4_MED -

• Message number: 080

• Message text: Complex type '&1' has not allowed key property '&2'

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_V4_MED080 - Complex type '&1' has not allowed key property '&2' ?

  The SAP error message /IWBEP/CM_V4_MED080 indicates that there is an issue with the definition of a complex type in your OData service. Specifically, it states that the complex type &1 has a key property &2 that is not allowed. This typically occurs when the OData service is trying to define a complex type that has a key property that does not conform to the expected structure or rules.
  Cause
  
  
  Incorrect Definition of Complex Type: The complex type may have been defined incorrectly in the data model. In OData, complex types can contain properties, but they cannot have key properties. Key properties are typically associated with entity types, not complex types.
  
  
  Misconfiguration in the Service: There may be a misconfiguration in the OData service definition, where a complex type is mistakenly treated as an entity type.
  
  
  Inconsistent Metadata: The metadata of the OData service may not be consistent with the underlying data model, leading to this error.
  
  
  Solution
  
  
  Review the Complex Type Definition: Check the definition of the complex type in your OData service. Ensure that it does not have any key properties defined. If it does, remove those key properties.
  
  
  Change to Entity Type: If the complex type is intended to have key properties, consider changing it to an entity type instead of a complex type.
  
  
  Update the Service Metadata: After making changes to the complex type definition, regenerate the service metadata to ensure that it reflects the updated definitions.
  
  
  Check for Annotations: Ensure that there are no annotations or configurations that incorrectly define the complex type as having key properties.
  
  
  Test the Service: After making the necessary changes, test the OData service to ensure that the error is resolved.
  
  
  Related Information
  
  
  OData Specification: Familiarize yourself with the OData specification, particularly the sections that discuss entity types and complex types. This will help you understand the differences and the rules governing their definitions.
  
  
  SAP Documentation: Refer to SAP's official documentation for OData services and the specific error message for more detailed guidance and examples.
  
  
  Debugging Tools: Use SAP's debugging tools to trace the execution of the OData service and identify where the error is being triggered.
  
  
  By following these steps, you should be able to resolve the error message /IWBEP/CM_V4_MED080 and ensure that your OData service is correctly defined.