How To Fix ESH_CDS_VAL002 - DDL &1 contains UNION

ESH_CDS_VAL002 - Overview

• Message type: E = Error

• Message class: ESH_CDS_VAL -

• Message number: 002

• Message text: DDL &1 contains UNION

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_CDS_VAL002 - DDL &1 contains UNION ?

  The SAP error message ESH_CDS_VAL002 indicates that there is an issue with a Core Data Services (CDS) view that contains a UNION operation. This error typically arises when the system is trying to validate or activate a CDS view that includes a UNION clause, which is not supported in certain contexts or configurations.
  
  Cause:
  
  Unsupported SQL Constructs: The use of UNION in a CDS view may not be supported in the context where the view is being used, such as in certain types of analytical queries or when trying to expose the view as a service.
  Incompatibility with Consumption: The CDS view might be intended for consumption in a way that does not support UNION, such as in OData services or when used in certain reporting tools.
  Database Compatibility: The underlying database may not support the specific SQL syntax or constructs used in the CDS view.
  
  
  Solution:
  
  Refactor the CDS View: If possible, refactor the CDS