How To Fix SBO_MSG004 - Number of key fields are different in CDS view and key structure

SBO_MSG004 - Overview

• Message type: E = Error

• Message class: SBO_MSG - Message Class for Class CL_SBO_BODATAMANAGE

• Message number: 004

• Message text: Number of key fields are different in CDS view and key structure

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message SBO_MSG004 - Number of key fields are different in CDS view and key structure ?

  The SAP error message SBO_MSG004, which states "Number of key fields are different in CDS view and key structure," typically occurs when there is a mismatch between the key fields defined in a Core Data Services (CDS) view and the key fields defined in the associated key structure. This can happen during the creation or activation of a CDS view, especially when it is intended to be used in a context where a key structure is expected, such as in an OData service or when integrating with other SAP components.
  Cause
  The error is caused by one of the following reasons:
  
  Mismatch in Key Fields: The number of key fields defined in the CDS view does not match the number of key fields defined in the key structure that is being referenced.
  Incorrect Annotations: The annotations in the CDS view may not correctly specify the key fields.
  Changes in Data Model: If there have been