How To Fix SADL_GW_DT_CDS012 - Semantic key element &1 is unknown or hidden.

SAP Error Message - Details

• Message type: E = Error

• Message class: SADL_GW_DT_CDS - Messages CDS Checks

• Message number: 012

• Message text: Semantic key element &1 is unknown or hidden.

What causes this issue?

The element used in the semantic key annotation is invalid. Only
elements that are exposed in the CDS view and that are not annotated as
'@Consumption.hidden' can be used as semantic key.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Use a valid element at the semantic key annotation in the CDS view.

Procedure for System Administrators

Contact the corresponding developer of the CDS view to correct the
error.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message SADL_GW_DT_CDS012 - Semantic key element &1 is unknown or hidden. ?

  The SAP error message SADL_GW_DT_CDS012 indicates that there is an issue with a semantic key element in a Core Data Services (CDS) view or a related data model. This error typically arises when the system cannot find a specified key element, which may be due to it being either unknown or hidden.
  Causes:
  
  Missing Key Element: The specified key element does not exist in the CDS view or the underlying data model.
  Hidden Key Element: The key element is defined in the CDS view but is not exposed or is marked as hidden.
  Incorrect Mapping: There may be an issue with how the key elements are mapped in the data model or in the service definition.
  Changes in Data Model: If there have been recent changes to the data model or CDS view, the service might not be updated accordingly.
  Authorization Issues: The user may not have the necessary authorizations to access the key element.
  
  Solutions:
  
  
  Check the CDS View Definition:
  
  Verify that the key element is correctly defined in the CDS view.
  Ensure that the key element is not marked as hidden. You can do this by checking the annotations in the CDS view.
  
  
  
  Update the Service:
  
  If changes were made to the CDS view, ensure that the service definition is updated. You may need to regenerate the service or refresh the metadata.
  
  
  
  Review the Data Model:
  
  Check the underlying data model to ensure that the key element exists and is correctly defined.
  
  
  
  Authorization Check:
  
  Ensure that the user has the necessary authorizations to access the key element. This may involve checking roles and permissions.
  
  
  
  Debugging:
  
  If the issue persists, consider using debugging tools to trace the execution and identify where the error is occurring.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or community forums for any specific notes or updates related to the error message.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional context.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  CDS Annotations: Familiarize yourself with CDS annotations and how they affect the visibility and behavior of key elements.
  
  By following these steps, you should be able to identify the root cause of the error and implement an appropriate solution.