How To Fix ESH_ENG_CDS_ABAP071 - Message Class unknown

SAP Error Message - Details

• Message type: E = Error

• Message class: ESH_ENG_CDS_ABAP - ES-CDS/ABAP

• Message number: 071

• Message text: Message Class unknown

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message ESH_ENG_CDS_ABAP071 - Message Class unknown ?

  The SAP error message ESH_ENG_CDS_ABAP071 typically indicates that there is an issue related to the Core Data Services (CDS) views in the SAP system, specifically that a message class is unknown or not defined. This can occur in various scenarios, such as when trying to access a CDS view that references a message class that does not exist or is not properly configured.
  Cause:
  
  Missing Message Class: The message class referenced in the CDS view is not defined in the system.
  Transport Issues: If the CDS view or its associated message class was transported from another system, it may not have been included in the transport request.
  Development Issues: The CDS view may have been developed without proper checks for the existence of the message class.
  System Configuration: There may be issues with the system configuration or inconsistencies in the database.
  
  Solution:
  
  Check Message Class: Verify if the message class referenced in the error message exists in the system. You can do this by using transaction code SE91 (Message Class Maintenance).
  Create/Define Message Class: If the message class does not exist, you may need to create it in SE91 and define the necessary messages.
  Transport Check: If the issue arose after a transport, ensure that all necessary objects, including the message class, were included in the transport request.
  Re-activate CDS View: Sometimes, re-activating the CDS view can resolve issues related to inconsistencies. You can do this in transaction SE11 or SE80.
  Check for Updates: Ensure that your SAP system is up to date with the latest support packages and notes, as there may be fixes related to this issue.
  Consult SAP Notes: Look for relevant SAP Notes in the SAP Support Portal that may address this specific error message.
  
  Related Information:
  
  Transaction Codes: SE91 (Message Class Maintenance), SE11 (Data Dictionary), SE80 (Object Navigator).
  SAP Documentation: Refer to the official SAP Help Portal for documentation on Core Data Services and error handling.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  
  If the problem persists after trying the above solutions, it may be beneficial to consult with your SAP Basis or Development team for further investigation.