How To Fix CFD_DE_HANDLER012 - Extension &1 cannot be created. Name is already in use.

CFD_DE_HANDLER012 - Overview

• Message type: E = Error

• Message class: CFD_DE_HANDLER - Custom Fields: Data Source Extension Handler

• Message number: 012

• Message text: Extension &1 cannot be created. Name is already in use.

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 CFD_DE_HANDLER012 - Extension &1 cannot be created. Name is already in use. ?

  The SAP error message CFD_DE_HANDLER012 indicates that there is an attempt to create an extension (such as a custom field or a custom object) in the SAP system, but the name you are trying to use is already in use by another extension or object. This can happen in various contexts, such as when working with the SAP Cloud Application Programming Model (CAP) or when creating custom fields in SAP S/4HANA.
  
  Cause:
  
  Name Conflict: The most common cause is that the name you are trying to use for the new extension is already assigned to another extension or object in the system.
  Namespace Issues: If you are working in a multi-tenant environment or using a specific namespace, there might be conflicts with names that are not unique within that context.
  Previous Deletion: If an extension was previously deleted but the system has not yet fully cleared the name from its registry, you might encounter