How To Fix MPN01051 - Manufacturer part number conversion exit is not active

MPN01051 - Overview

• Message type: E = Error

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

• Message number: 051

• Message text: Manufacturer part number conversion exit is not active

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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message MPN01051 - Manufacturer part number conversion exit is not active ?

  The SAP error message MPN01051, which states "Manufacturer part number conversion exit is not active," typically occurs when the system is unable to convert a manufacturer part number (MPN) due to the absence of an active conversion exit for that specific part number format. This can happen in various scenarios, such as during the creation or modification of material master records or when processing purchase orders.
  
  Cause:
  
  Inactive Conversion Exit: The conversion exit for the manufacturer part number is not defined or is inactive in the system.
  Missing Configuration: The necessary configuration for handling manufacturer part numbers may not be set up correctly in the system.
  Incorrect Data Format: The format of the manufacturer part number being entered does not match the expected format defined in the conversion exit.
  
  
  Solution:
  
  
  Check Conversion Exits:
  
  Go to transaction code SE11 (Data Dictionary) and check the conversion exit for the manufacturer part number. The conversion exit is usually defined in