How To Fix DMC_EXCEPTION001 - Lookup tables cannot have associated source structures at a lower level

SAP Error Message - Details

• Message type: E = Error

• Message class: DMC_EXCEPTION - Message class for exception texts

• Message number: 001

• Message text: Lookup tables cannot have associated source structures at a lower level

A lookup table contains records that are looked up from a field in
another table to fill in the value of that field. The table can be
referenced by rules and used by mapping operations, but does not
directly provide content for fields in the target system.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message DMC_EXCEPTION001 - Lookup tables cannot have associated source structures at a lower level ?

  The SAP error message DMC_EXCEPTION001 indicates that there is an issue with the configuration of lookup tables in the Data Management Console (DMC) of SAP. Specifically, this error occurs when a lookup table is associated with a source structure that is at a lower level in the hierarchy than the lookup table itself. This can lead to inconsistencies in data processing and mapping.
  Cause:
  
  Hierarchy Misconfiguration: The lookup table is defined at a higher level in the data hierarchy, while the associated source structure is defined at a lower level. This can happen if the data model is not properly aligned.
  Incorrect Data Mapping: The mapping between the lookup table and the source structure may not be correctly set up, leading to this error.
  Data Model Changes: If there have been recent changes to the data model, such as adding or modifying structures, it may have caused the lookup table to become misaligned with the source structure.
  
  Solution:
  
  Review Data Model: Check the data model to ensure that the lookup table and the associated source structure are correctly aligned in terms of hierarchy. Make sure that the lookup table is at the appropriate level relative to the source structure.
  Adjust Lookup Table Configuration: If necessary, reconfigure the lookup table to ensure it is associated with a source structure at the same or a higher level in the hierarchy.
  Check Mapping Settings: Verify the mapping settings between the lookup table and the source structure. Ensure that the mappings are correctly defined and that there are no discrepancies.
  Consult Documentation: Refer to SAP documentation or guidelines for configuring lookup tables and source structures to ensure compliance with best practices.
  Testing: After making adjustments, test the configuration to ensure that the error is resolved and that data processing works as expected.
  
  Related Information:
  
  SAP DMC Documentation: Review the official SAP documentation for the Data Management Console for detailed information on configuring lookup tables and source structures.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and to find additional solutions or workarounds.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  
  By following these steps, you should be able to resolve the DMC_EXCEPTION001 error and ensure that your lookup tables and source structures are correctly configured.