How To Fix CFD_DE_UTILITIES016 - Invalid extension. Entity extensions are not allowed for CDS data sources

CFD_DE_UTILITIES016 - Overview

• Message type: E = Error

• Message class: CFD_DE_UTILITIES - Custom Fields: Data Source Extension Utilities

• Message number: 016

• Message text: Invalid extension. Entity extensions are not allowed for CDS data sources

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 CFD_DE_UTILITIES016 - Invalid extension. Entity extensions are not allowed for CDS data sources ?

  The SAP error message CFD_DE_UTILITIES016, which states "Invalid extension. Entity extensions are not allowed for CDS data sources," typically occurs when you are trying to create or use an entity extension on a Core Data Services (CDS) data source in SAP. This error indicates that the system does not support extending CDS views in the way you are attempting.
  
  Cause:
  
  Entity Extensions on CDS Views: The error arises because entity extensions are not permitted for CDS data sources. In SAP, entity extensions are typically used to add fields to existing entities in the OData service, but this functionality is not supported for CDS views.
  Incorrect Configuration: You may be trying to extend a CDS view that is not designed to be extended, or you may have misconfigured the extension in the system.
  Version Compatibility: The version of SAP you are using may not support the specific functionality you are trying to implement.
  
  
  Solution:
  
  Use Alternative Approaches: