How To Fix MPN01003 - External manufacturer number & does not exist in the vendor master

SAP Error Message - Details

• Message type: E = Error

• Message class: MPN01 - MPN Message: Material Master / customizing

• Message number: 003

• Message text: External manufacturer number & does not exist in the vendor master

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message MPN01003 - External manufacturer number & does not exist in the vendor master ?

  The SAP error message MPN01003 indicates that the external manufacturer number you are trying to use does not exist in the vendor master data. This error typically occurs when you are working with materials that are linked to external manufacturers, and the system cannot find the corresponding vendor record.
  Cause:
  
  Missing Vendor Master Record: The external manufacturer number you are using is not defined in the vendor master data.
  Incorrect External Manufacturer Number: The number you entered may be incorrect or misspelled.
  Data Synchronization Issues: If your system is integrated with other systems (like a third-party application), there may be synchronization issues leading to missing or outdated vendor data.
  Vendor Status: The vendor might be inactive or blocked, which can also lead to this error.
  
  Solution:
  
  
  Check Vendor Master Data:
  
  Go to the vendor master data transaction (e.g., XK03 for display).
  Verify if the external manufacturer number exists in the vendor master.
  If it does not exist, you will need to create a new vendor master record (using transaction XK01 for creation).
  
  
  
  Correct the External Manufacturer Number:
  
  Double-check the external manufacturer number you are entering for any typos or errors.
  Ensure that you are using the correct number format as expected by the system.
  
  
  
  Activate or Unblock Vendor:
  
  If the vendor exists but is inactive or blocked, you may need to activate or unblock it. This can be done in the vendor master data transaction.
  
  
  
  Data Synchronization:
  
  If your SAP system is integrated with other systems, ensure that the vendor data is synchronized correctly. You may need to run data synchronization jobs or check for any errors in the integration process.
  
  
  
  Consult Documentation:
  
  Review any relevant documentation or guidelines provided by your organization regarding vendor master data management.
  
  
  
  Related Information:
  
  Transaction Codes:
  
  XK01: Create Vendor
  XK02: Change Vendor
  XK03: Display Vendor
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to vendor master data.
  User Authorization: Ensure that you have the necessary authorizations to view or modify vendor master data.
  Training: If you are unfamiliar with vendor master data management, consider seeking training or guidance from a knowledgeable colleague or SAP consultant.
  
  By following these steps, you should be able to resolve the MPN01003 error and ensure that the external manufacturer number is correctly linked to the vendor master data in your SAP system.