How To Fix VMP_MSG301 - You are not authorized to change Material Master

SAP Error Message - Details

• Message type: E = Error

• Message class: VMP_MSG - VMP Message Manager

• Message number: 301

• Message text: You are not authorized to change Material Master

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message VMP_MSG301 - You are not authorized to change Material Master ?

  SAP Error Message:
  
  VMP_MSG301 You are not authorized to change Material Master
  
  Cause:
  This error occurs because the user attempting to change the Material Master record does not have the necessary authorization. In SAP, access to change material master data is controlled by specific authorization objects and roles. If the user’s assigned roles do not include the required authorizations, the system will prevent changes and display this message.
  
  Explanation:
  
  The Material Master is a critical data object in SAP, and changes to it are controlled tightly.
  Authorization objects related to material master changes include:
  
  M_MATE_MAT (Material Master: Material)
  M_MATE_WRK (Material Master: Plant)
  M_MATE_STA (Material Master: Status)
  
  
  The user must have the appropriate activity (e.g., create, change, display) allowed in these authorization objects.
  Sometimes, the authorization check is also influenced by organizational levels such as Plant, Storage Location, or Material Type.
  
  
  Solution:
  
  
  Check User Authorizations:
  
  Use transaction SU53 immediately after the error occurs to display the last failed authorization check.
  This will show which authorization object and field values are missing or insufficient.
  
  
  
  Review and Assign Correct Roles:
  
  Identify the roles that contain the required authorizations for changing material master data.
  Use transaction PFCG to check the roles assigned to the user.
  If necessary, update or create a role with the required authorizations and assign it to the user.
  
  
  
  Authorization Objects to Verify:
  
  M_MATE_MAT: Check if the user has the activity '02' (Change) for the relevant material types.
  M_MATE_WRK: Check if the user has authorization for the plant(s) involved.
  M_MATE_STA: Check if the user has authorization for the material status.
  
  
  
  Check Organizational Level Restrictions:
  
  Ensure the user has authorization for the specific plant or storage location if the system restricts changes by these organizational units.
  
  
  
  Testing:
  
  After updating authorizations, test the change again.
  If the error persists, repeat the SU53 check to identify any other missing authorizations.
  
  
  
  
  Additional Information:
  
  This error is common in environments with strict segregation of duties (SoD) and controlled access.
  Sometimes, the error can also occur if the material master is locked or in a status that prevents changes.
  If the user has the correct authorizations but still faces the error, check if the material master record is locked by another user or process.
  For detailed troubleshooting, SAP Notes and documentation related to authorization objects MMATE* can be consulted.
  
  
  Summary:
  
  
  
  Aspect
  Details
  
  
  
  
  Cause
  User lacks authorization to change material master data.
  
  
  Solution
  Check SU53 for missing authorizations; assign/update roles with required authorizations (M_MATE_MAT, M_MATE_WRK, M_MATE_STA).
  
  
  Related Info
  Authorization objects control access by material type, plant, and status; check for locks or material status restrictions.
  
  
  
  
  If you need help with specific role or authorization object configuration, feel free to ask!