How To Fix CSP_BDEF_CHECK019 - CDS view '&1' must not be built on a JOIN

CSP_BDEF_CHECK019 - Overview

• Message type: E = Error

• Message class: CSP_BDEF_CHECK - Messages for CSP-implemented BDEF checks

• Message number: 019

• Message text: CDS view '&1' must not be built on a JOIN

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CSP_BDEF_CHECK019 - CDS view '&1' must not be built on a JOIN ?

  The SAP error message CSP_BDEF_CHECK019 indicates that a Core Data Services (CDS) view is being defined in a way that is not allowed by the system. Specifically, it states that the CDS view '&1' must not be built on a JOIN. This error typically arises when you attempt to create a CDS view that uses a JOIN operation, which is not permitted in certain contexts, particularly when the view is intended for specific types of consumption or when it is being used in a certain way (e.g., for analytical purposes).
  
  Cause:
  
  CDS View Definition: The CDS view is defined using a JOIN between two or more database tables or views, which is not allowed in the context where the view is being used.
  Restrictions on CDS Views: Certain types of CDS views, especially those intended for use in specific applications or frameworks (like SAP Fiori or SAP BW), may have restrictions that prevent