How To Fix CM_EXPERT351 - Empty external ID for the fact &1 in the mapping table for facts

SAP Error Message - Details

• Message type: E = Error

• Message class: CM_EXPERT - Messages for Expert

• Message number: 351

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

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CM_EXPERT351 - Empty external ID for the fact &1 in the mapping table for facts ?

  The SAP error message CM_EXPERT351 indicates that there is an issue with the mapping of facts in the context of SAP's data management or reporting tools, particularly in the context of the SAP Business Warehouse (BW) or SAP Analytics solutions. The error specifically points out that there is an empty external ID for a fact in the mapping table, which is essential for the system to correctly identify and process the data.
  Cause:
  
  Missing External ID: The most common cause of this error is that the external ID for a specific fact is not defined or is missing in the mapping table. This can happen due to data import issues, incorrect configuration, or manual errors during data entry.
  Data Model Changes: If there have been recent changes to the data model or the mapping configuration, it may lead to inconsistencies where some facts do not have corresponding external IDs.
  Inconsistent Data: If the data being processed has inconsistencies or if there are issues with the data source, it may lead to missing external IDs.
  
  Solution:
  
  Check Mapping Table: Review the mapping table for the facts in question. Ensure that all facts have corresponding external IDs defined. If any are missing, you will need to add them.
  Data Validation: Validate the data being imported or processed to ensure that it conforms to the expected structure and that all necessary fields, including external IDs, are populated.
  Reconfigure Data Model: If there have been changes to the data model, ensure that the mapping configuration is updated accordingly. This may involve re-mapping facts to their external IDs.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance on how to manage mapping tables and external IDs in your version of SAP.
  Error Logs: Check the error logs for additional details that may provide more context about the specific fact that is causing the issue.
  
  Related Information:
  
  SAP Notes: Look for relevant SAP Notes that may address this specific error or provide patches and updates that could resolve the issue.
  SAP Community: Engage with the SAP Community forums where other users may have encountered similar issues and can provide insights or solutions.
  Support: If the issue persists, consider reaching out to SAP Support for assistance, especially if it is impacting critical business processes.
  
  By addressing the missing external ID and ensuring that the mapping table is correctly configured, you should be able to resolve the CM_EXPERT351 error.