How To Fix C+812 - Changing master data is not allowed for material &1 &2

SAP Error Message - Details

• Message type: E = Error

• Message class: C+ -

• Message number: 812

• Message text: Changing master data is not allowed for material &1 &2

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 C+812 - Changing master data is not allowed for material &1 &2 ?

  The SAP error message C+812 ("Changing master data is not allowed for material &1 &2") typically occurs when there is an attempt to modify the master data of a material that is locked or restricted from changes. This can happen for various reasons, including:
  Causes:
  
  Material Status: The material may have a status that prevents changes, such as being marked as "Blocked" or "Inactive."
  Change Control: The system may be configured to restrict changes to certain materials based on specific criteria or settings in the material master.
  User Authorizations: The user attempting to make the changes may not have the necessary authorizations to modify the material master data.
  Document Flow: There may be open purchase orders, production orders, or other documents that reference the material, preventing changes to its master data.
  Material Type Restrictions: Certain material types may have restrictions on changing specific fields or attributes.
  
  Solutions:
  
  Check Material Status: Verify the status of the material in the material master (transaction MM03). If it is blocked or inactive, you may need to change its status to allow modifications.
  Review Change Control Settings: Check if there are any specific settings in the configuration that restrict changes to the material master. This may involve consulting with your SAP configuration team.
  User Authorizations: Ensure that the user has the appropriate authorizations to make changes to the material master. This can be checked in transaction SU53 or by consulting with your security team.
  Clear Document Flow: If there are open documents referencing the material, you may need to close or modify those documents before making changes to the material master.
  Consult Documentation: Review the SAP documentation or help files related to material master data management for any specific guidelines or restrictions that may apply.
  
  Related Information:
  
  Transaction Codes: 
  
  MM03: Display Material
  MM02: Change Material
  MM01: Create Material
  
  
  Authorization Objects: Check for authorization objects related to material master changes, such as M_MATE_MAR (Material Master: General Data) and M_MATE_WRK (Material Master: Plant Data).
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address specific issues related to this error message.
  Consulting SAP Help: The SAP Help Portal provides detailed information on material master data management and error messages.
  
  If the issue persists after checking these areas, it may be beneficial to consult with your SAP support team or a functional consultant for further assistance.