How To Fix MM635 - You are not authorized to lock the material &1

MM635 - Overview

• Message type: E = Error

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

• Message number: 635

• Message text: You are not authorized to lock the material &1

What causes this issue?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

System Response

How to fix this error?

If necessary, ask your system administrator to authorize you to lock
materials.

Procedure for System Administrators

If the user is to be authorized to lock materials, assign the
authorization object <DS:UO.M_MATE_MAF>M_MATE_MAF</> to the user.

Error message extract from SAP system. Copyright SAP SE.

MM635 - Details

• The SAP error message MM635 ("You are not authorized to lock the material &1") typically occurs when a user attempts to perform an action that requires locking a material, but they do not have the necessary authorization to do so. This can happen in various transactions related to material management, such as creating or changing material master records.
  
  Cause:
  
  Authorization Issues: The user does not have the required authorization object to lock the material. This is often related to the authorization objects for material management (e.g., M_MATE_MAR, M_MATE_WRK).
  Material Status: The material may be in a status that restricts certain actions, including locking.
  User Role: The user’s role may not include permissions for the specific plant or material type.
  
  
  Solution:
  
  
  Check Authorizations:
  
  Use transaction code SU53 immediately after the error occurs to check for missing authorizations. This will show you which authorization checks failed.
  Review the user’s roles and profiles in transaction PFCG to ensure that the necessary