How To Fix CM_EXPERT342 - Mapping table for facts contains no external ID for the fact

SAP Error Message - Details

• Message type: E = Error

• Message class: CM_EXPERT - Messages for Expert

• Message number: 342

• Message text: Mapping table for facts contains no external ID for the fact

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CM_EXPERT342 - Mapping table for facts contains no external ID for the fact ?

  The SAP error message CM_EXPERT342 indicates that there is an issue with the mapping table for facts in the context of SAP BusinessObjects or SAP BW (Business Warehouse). This error typically arises when the system is unable to find an external ID for a specific fact in the mapping table, which is essential for the proper functioning of data extraction or reporting processes.
  Cause:
  
  Missing External ID: The mapping table for facts does not contain an entry for the external ID that is being referenced. This could be due to data not being loaded correctly or the mapping table not being updated.
  Incorrect Configuration: The configuration settings for the data source or the mapping table may be incorrect, leading to the inability to find the necessary external ID.
  Data Model Changes: Changes in the data model or schema that have not been reflected in the mapping table can lead to this error.
  Data Source Issues: The data source from which the facts are being pulled may have issues, such as missing records or incorrect data formats.
  
  Solution:
  
  Check Mapping Table: Verify the mapping table for facts to ensure that it contains the necessary external ID. If it is missing, you may need to add the appropriate entry.
  Update Data Model: If there have been changes to the data model, ensure that the mapping table is updated accordingly to reflect these changes.
  Review Configuration: Check the configuration settings for the data source and the mapping table to ensure they are correct and aligned with the expected data structure.
  Data Load Process: Ensure that the data load process is functioning correctly and that all necessary data is being loaded into the mapping table.
  Consult Documentation: Refer to SAP documentation or support resources for specific guidance on the mapping table and external IDs related to your version of SAP.
  Error Logs: Review error logs for additional context or related errors that may provide more insight into the issue.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  Documentation: Review the official SAP documentation for BusinessObjects or BW for detailed information on mapping tables and external IDs.
  
  If the issue persists after trying the above solutions, it may be beneficial to reach out to SAP support for further assistance.