How To Fix /IWBEP/SBDSP_DM028 - Key property &1 does not have an Output mapping in the Query operation

/IWBEP/SBDSP_DM028 - Overview

• Message type: E = Error

• Message class: /IWBEP/SBDSP_DM -

• Message number: 028

• Message text: Key property &1 does not have an Output mapping in the Query operation

Self-Explanatory Message

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/IWBEP/SBDSP_DM028 - Details

• The SAP error message /IWBEP/SBDSP_DM028 indicates that there is a problem with the output mapping of a key property in a query operation within an OData service. This typically occurs when the OData service is trying to return data, but the specified key property does not have a corresponding output mapping defined in the service's metadata.
  
  Cause:
  
  Missing Output Mapping: The key property specified in the error message does not have an output mapping defined in the OData service. This means that the service does not know how to serialize this property into the response.
  Incorrect Configuration: The OData service might be incorrectly configured, or the data model might not be properly defined.
  Changes in Data Model: If there have been recent changes to the underlying data model or the OData service definition, it may lead to inconsistencies in the output mapping.
  
  
  Solution:
  
  Check the Data Model: Ensure that the key property is correctly defined in