How To Fix DMEE124 - Format-specific structure changed: check mapping assignments

SAP Error Message - Details

• Message type: E = Error

• Message class: DMEE - Messages for Data Medium Exchange Engine

• Message number: 124

• Message text: Format-specific structure changed: check mapping assignments

What causes this issue?

You are changing or deleting the format-specific structure that has
been assigned to the format tree. By doing this, mapping assignments
could become invalid.

System Response

The system generates a new set of possible source fields (source field
inventory).

How to fix this error?

Check whether fields from the deleted structure were used as source
fields. If necessary, change these mapping assignments.

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 DMEE124 - Format-specific structure changed: check mapping assignments ?

  The SAP error message DMEE124 indicates that there has been a change in the format-specific structure of the Data Medium Exchange (DMEE) mapping. This typically occurs when the underlying structure of the data format you are using has been modified, which can lead to inconsistencies in the mapping assignments.
  Cause:
  
  Change in Format Structure: The format you are using for data exchange (e.g., SEPA, DTAUS) has been updated or modified, which may include changes in fields, data types, or the overall structure.
  Mapping Assignments: The mapping assignments in the DMEE tree may not align with the new structure, leading to this error.
  Versioning Issues: If you are using a different version of the DMEE format than what is expected, this can also trigger the error.
  
  Solution:
  
  Check Format-Specific Structure: Review the documentation or specifications for the format you are using to understand the changes that have been made.
  Update Mapping Assignments:
  
  Go to the DMEE mapping transaction (usually transaction code DMEE).
  Open the relevant mapping tree and check the assignments.
  Adjust the mapping assignments to align with the new structure. This may involve adding, removing, or modifying nodes in the mapping tree.
  
  
  Test the Mapping: After making changes, test the mapping to ensure that it works correctly with the new structure.
  Consult SAP Notes: Check for any relevant SAP Notes that may provide guidance or fixes related to the specific format you are using.
  Backup and Version Control: If possible, maintain a backup of your previous mapping assignments before making changes, so you can revert if necessary.
  
  Related Information:
  
  Transaction Codes: Use transaction code DMEE to access the DMEE mapping tool.
  Documentation: Refer to SAP Help documentation for detailed information on DMEE and the specific formats you are working with.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  Support: If the issue persists, consider reaching out to SAP support for assistance, especially if the changes are related to a recent update or patch.
  
  By following these steps, you should be able to resolve the DMEE124 error and ensure that your DMEE mappings are correctly aligned with the required format structure.