How To Fix ON_DIR_MAT001 - Mapping from external key to internal ID failed

SAP Error Message - Details

• Message type: E = Error

• Message class: ON_DIR_MAT -

• Message number: 001

• Message text: Mapping from external key to internal ID failed

What causes this issue?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

System Response

How to fix this error?

Contact your system administrator.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message ON_DIR_MAT001 - Mapping from external key to internal ID failed ?

  The SAP error message ON_DIR_MAT001 indicates that there is a failure in mapping an external key to an internal ID, typically when dealing with materials or other master data in SAP. This error often arises during data uploads, migrations, or integrations where external identifiers (like those from legacy systems) need to be converted to SAP's internal identifiers.
  Causes:
  
  Missing Mapping: The external key you are trying to use does not have a corresponding internal ID in the SAP system.
  Incorrect Configuration: The mapping configuration between the external and internal IDs may not be set up correctly.
  Data Quality Issues: The external data may contain errors, such as typos or formatting issues, that prevent successful mapping.
  Authorization Issues: The user executing the operation may not have the necessary permissions to access the required data.
  Data Not Loaded: The internal ID may not yet exist in the system if the data load process is not completed.
  
  Solutions:
  
  Check Mapping Configuration: Ensure that the mapping between external keys and internal IDs is correctly configured in the relevant SAP transaction or middleware.
  Validate External Data: Review the external data for accuracy and completeness. Ensure that all external keys are valid and correspond to existing internal IDs.
  Load Missing Data: If the internal IDs are not present, ensure that the necessary data has been loaded into SAP before attempting the mapping.
  Review Authorizations: Check the user permissions to ensure that the user has the necessary access rights to perform the operation.
  Use Transaction Codes: Utilize relevant transaction codes (like MM01, MM02, or MM03 for material master data) to manually check if the internal IDs exist.
  Consult Logs: Review any logs or error messages generated during the data load or mapping process for additional context on the failure.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  Documentation: Refer to SAP documentation for the specific module you are working with (e.g., Material Management) for guidance on data mapping and integration.
  Community Forums: Engage with SAP community forums or support channels for insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify the root cause of the ON_DIR_MAT001 error and implement a solution to resolve it.