How To Fix DMEE138 - Key field flag is changed for &-&

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 138

• Message text: Key field flag is changed for &-&

Self-Explanatory Message

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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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message DMEE138 - Key field flag is changed for &-& ?

  The SAP error message DMEE138 indicates that there is an issue with the configuration of the Data Medium Exchange Engine (DMEE) in SAP, specifically related to the key field flag for a certain field in the DMEE tree structure. This error typically arises when there is a mismatch or inconsistency in the configuration of the DMEE tree, particularly when a key field is modified or flagged incorrectly.
  Cause:
  
  Key Field Modification: The error occurs when a key field in the DMEE tree structure has been changed after it was already defined. This can happen if the configuration was altered without proper adjustments to the related settings.
  Inconsistent Configuration: If the DMEE tree structure is not consistent with the underlying data or if there are changes in the data structure that are not reflected in the DMEE configuration, this error can arise.
  Versioning Issues: If there are multiple versions of the DMEE tree and changes are made to one version without updating others, it can lead to this error.
  
  Solution:
  
  Review DMEE Configuration: Check the DMEE tree configuration for the specific field mentioned in the error message. Ensure that the key field settings are consistent and correctly defined.
  Revert Changes: If the key field was recently changed, consider reverting it to its previous state to see if that resolves the issue.
  Update Related Settings: If changes are necessary, ensure that all related settings and configurations are updated accordingly to maintain consistency.
  Test the Configuration: After making changes, test the DMEE tree to ensure that the error does not reoccur and that the output is as expected.
  Consult Documentation: Refer to SAP documentation or notes related to DMEE configuration for any specific guidelines or best practices that may apply to your situation.
  
  Related Information:
  
  Transaction Codes: You can use transaction codes like DMEE to access the DMEE tree configuration.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Community Forums: Consider searching or posting in SAP community forums for insights from other users who may have encountered the same issue.
  
  If the problem persists after following these steps, it may be beneficial to consult with an SAP expert or your organization's SAP support team for further assistance.