How To Fix E0666 - This action cannot be used for extensions

E0666 - Overview

• Message type: E = Error

• Message class: E0 - SAP EDI messages

• Message number: 666

• Message text: This action cannot be used for extensions

What causes this issue?

The action selected cannot be carried out for extensions.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Choose a basic type.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message E0666 - This action cannot be used for extensions ?

  The SAP error message E0666, which states "This action cannot be used for extensions," typically occurs in the context of SAP development environments, particularly when working with ABAP (Advanced Business Application Programming) and the enhancement framework.
  
  Cause:
  This error usually arises when you attempt to perform an action that is not permitted on an extension or enhancement object. Common scenarios include:
  
  Inappropriate Action: You might be trying to delete, modify, or transport an enhancement or extension that is not allowed.
  Incorrect Object Type: The action you are trying to perform may not be applicable to the type of object you are working with (e.g., trying to activate a non-active enhancement).
  Authorization Issues: Lack of proper authorizations to perform certain actions on enhancement objects.
  
  
  Solution:
  To resolve the E0666 error, consider the following steps:
  
  Check Object Type: Ensure that you are working with the correct type of object and that the action you are trying to perform is valid