How To Fix CHK_ENH253 - Enhancement implementation &1 (version &2) has an ambivalent type (EX/IM)

SAP Error Message - Details

• Message type: E = Error

• Message class: CHK_ENH - Messages for enhancement checks

• Message number: 253

• Message text: Enhancement implementation &1 (version &2) has an ambivalent type (EX/IM)

What causes this issue?

Enhancement implementations have been found in your system that have an
ambivalent status:
For implicit enhanement elements, entries exist in table ENHCROSS with
explicit enhancement elements.

System Response

The explicit enhancement immplementations will never be executed, but
they can cause errors during an upgrade of the enhancements.

How to fix this error?

Execute the program ENH_CREATE_ENHCROSS. This program builds the
corresponding table entries.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CHK_ENH253 - Enhancement implementation &1 (version &2) has an ambivalent type (EX/IM) ?

  The SAP error message CHK_ENH253 indicates that there is an issue with an enhancement implementation in your SAP system. Specifically, it states that the enhancement implementation has an "ambivalent type," which means that the implementation is defined in a way that is not clear whether it is an "exiting" (EX) or "implementing" (IM) enhancement.
  Cause:
  
  Ambiguous Definition: The enhancement implementation is defined in such a way that it could be interpreted as both an exit and an implementation. This can happen if the enhancement is not properly categorized or if there are conflicting definitions in the enhancement implementation.
  Incorrect Configuration: The enhancement might have been incorrectly configured or defined in the system, leading to this ambiguity.
  Version Mismatch: There may be a version mismatch between the enhancement implementation and the system or other related components.
  
  Solution:
  
  Check Enhancement Implementation: Review the enhancement implementation in the SAP system. Ensure that it is correctly defined as either an exit or an implementation. You can do this by navigating to the enhancement implementation in the SAP transaction SE80 or SE19.
  Correct the Type: If the enhancement is incorrectly categorized, you may need to change its type to either EX (exit) or IM (implementation) based on its intended use.
  Review Related Enhancements: Check if there are any related enhancements that might be causing the conflict. Ensure that there are no overlapping definitions.
  Consult Documentation: Refer to the SAP documentation or notes related to the specific enhancement implementation for any additional guidance or known issues.
  Transport Requests: If the enhancement was recently transported from another system, ensure that the transport request was successful and that all dependencies are correctly in place.
  
  Related Information:
  
  Transaction Codes: Use transaction codes like SE80 (Object Navigator) or SE19 (Enhancement Implementation) to investigate the enhancement implementation.
  SAP Notes: Check for any relevant SAP Notes that might address this specific error message or provide additional context.
  Debugging: If necessary, you can debug the enhancement implementation to see where the ambiguity arises.
  SAP Community: Consider reaching out to the SAP Community or forums for additional insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to resolve the CHK_ENH253 error and clarify the type of enhancement implementation in your SAP system.