How To Fix ENHANCEMENT004 - The names Z* and Y* are reserved; choose a different name

ENHANCEMENT004 - Overview

• Message type: E = Error

• Message class: ENHANCEMENT - SAP customer enhancement project messages

• Message number: 004

• Message text: The names Z* and Y* are reserved; choose a different name

What causes this issue?

Enhancements whose names start with Y or Z are part of the customer
namespace and cannot be created by SAP.

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 another name.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message ENHANCEMENT004 - The names Z* and Y* are reserved; choose a different name ?

  The SAP error message ENHANCEMENT004 indicates that you are trying to create or use an enhancement (like a user exit, BAdI, or enhancement spot) with a name that starts with "Z" or "Y". In SAP, names that begin with "Z" or "Y" are reserved for customer-specific developments, while SAP standard objects typically use names that start with letters A through W.
  
  Cause:
  The error occurs when:
  
  You attempt to create a new enhancement or modify an existing one using a name that starts with "Z" or "Y".
  The naming convention is not followed, leading to conflicts with SAP's reserved naming conventions.
  
  
  Solution:
  To resolve this error, you should:
  
  Choose a Different Name: Select a name for your enhancement that does not start with "Z" or "Y". You can use names that start with letters A through W.
  Check Existing Enhancements: If you are modifying an existing enhancement, ensure that you are not trying to rename it to a