How To Fix ESH_CDS_VAL005 - Field &1 of view &2 derived from &3 which involves an UNION CLAUSE

SAP Error Message - Details

• Message type: E = Error

• Message class: ESH_CDS_VAL -

• Message number: 005

• Message text: Field &1 of view &2 derived from &3 which involves an UNION CLAUSE

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.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message ESH_CDS_VAL005 - Field &1 of view &2 derived from &3 which involves an UNION CLAUSE ?

  The SAP error message ESH_CDS_VAL005 typically indicates an issue with a Core Data Services (CDS) view that involves a UNION clause. This error can occur when there are inconsistencies or conflicts in the fields being selected from the different parts of the UNION.
  Cause:
  
  Field Mismatch: The fields being selected in the UNION clause from the different SELECT statements must have the same data type and structure. If there is a mismatch in the field types or names, this error can occur.
  Inconsistent Field Definitions: If the fields in the different SELECT statements have different definitions (e.g., one is a string and the other is an integer), this will lead to the error.
  Missing Fields: If one part of the UNION does not include a field that is present in the other part, it can also trigger this error.
  Semantic Issues: The fields may have different semantics or meanings, which can lead to confusion in the data model.
  
  Solution:
  
  Check Field Definitions: Ensure that all fields in the UNION clause have the same data type and structure. This includes checking the length and precision of fields.
  Align Field Names: Make sure that the field names are consistent across all parts of the UNION. If necessary, use aliases to standardize field names.
  Review the CDS View: Look at the definition of the CDS view and ensure that all fields are correctly defined and that there are no missing fields in any part of the UNION.
  Test Each Part Separately: If possible, test each SELECT statement in the UNION separately to ensure they work correctly on their own before combining them.
  Use the Correct Annotations: Ensure that the appropriate annotations are used in the CDS view to define the semantics of the fields correctly.
  
  Related Information:
  
  CDS Views: Core Data Services (CDS) are a way to define semantic data models in SAP. They allow for the creation of complex data models that can be consumed by various applications.
  UNION Clause: The UNION clause is used in SQL to combine the results of two or more SELECT statements. The number of columns and their data types must match in each SELECT statement.
  SAP Notes and Documentation: Check SAP Notes for any known issues or updates related to this error message. The SAP Help Portal may also provide additional guidance on working with CDS views and UNION clauses.
  
  If the issue persists after checking these aspects, consider reaching out to your SAP support team or consulting the SAP Community for further assistance.