How To Fix MM641 - The material type you have entered requires a change number

SAP Error Message - Details

• Message type: E = Error

• Message class: MM - Messages for material master maintenance and Customizing

• Message number: 641

• Message text: The material type you have entered requires a change number

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 MM641 - The material type you have entered requires a change number ?

  The SAP error message MM641 indicates that the material type you are trying to work with requires a change number. This typically occurs in the context of material master data management, particularly when dealing with materials that are subject to change control processes.
  Cause:
  The error arises when:
  
  Change Management Requirement: The material type you are working with is configured to require a change number for any changes to be made. This is often the case for materials that are subject to strict quality control or regulatory requirements.
  Configuration Settings: The material type settings in the SAP system have been defined to enforce change management, which means that any modifications to the material master data must be accompanied by a change number.
  
  Solution:
  To resolve the MM641 error, you can follow these steps:
  
  
  Obtain a Change Number:
  
  If you are authorized, create a change number in the system. This can typically be done through the transaction code CC01 (Create Change Number).
  Ensure that the change number is valid and corresponds to the type of changes you are making.
  
  
  
  Enter the Change Number:
  
  Once you have a valid change number, go back to the transaction where you encountered the error and enter the change number in the appropriate field.
  
  
  
  Check Material Type Configuration:
  
  If you believe that the material type should not require a change number, consult with your SAP configuration team. They can review the settings for the material type in transaction OMH1 (Define Material Types) and adjust the configuration if necessary.
  
  
  
  User Authorization:
  
  Ensure that you have the necessary authorizations to create and use change numbers. If you do not have the required permissions, contact your SAP security team.
  
  
  
  Documentation and Training:
  
  If you are frequently encountering this error, consider reviewing the documentation related to change management in your organization or seek training on how to handle materials that require change numbers.
  
  
  
  Related Information:
  
  Change Management in SAP: Change management is a critical aspect of material master data management, especially in industries like pharmaceuticals, aerospace, and automotive, where compliance with regulations is essential.
  Transaction Codes:
  
  CC01: Create Change Number
  CC02: Change Change Number
  CC03: Display Change Number
  
  
  Material Master Data: Understanding the structure and requirements of material master data in SAP can help prevent errors related to change management.
  
  By following these steps, you should be able to resolve the MM641 error and proceed with your material master data changes.