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

MPN01003 - Overview

• 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

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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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with other systems (like a third-party application), there may be synchronization issues leading to missing or outdated vendor data.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