How To Fix CM_EXPERT349 - Empty external ID for the composition &1 in the mapping table

SAP Error Message - Details

• Message type: E = Error

• Message class: CM_EXPERT - Messages for Expert

• Message number: 349

• Message text: Empty external ID for the composition &1 in the mapping table

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

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 CM_EXPERT349 - Empty external ID for the composition &1 in the mapping table ?

  The SAP error message CM_EXPERT349 indicates that there is an issue with the external ID for a composition in the mapping table. This error typically arises in the context of SAP Master Data Governance (MDG) or when dealing with product data management, where compositions (like product structures) are defined.
  
  Cause:
  The error message "Empty external ID for the composition &1 in the mapping table" suggests that the system is trying to reference a composition (identified by &1) that does not have an associated external ID in the mapping table. This can occur due to several reasons:
  
  Missing Data: The external ID for the composition may not have been populated during data entry or migration.
  Data Inconsistency: There may be inconsistencies in the mapping table where the external ID is expected but not found.
  
  Configuration Issues: There could be configuration issues in the system that prevent the external ID from being generated or linked correctly.
  Data Migration