How To Fix MM636 - You are not authorized to undo the lock for material &1

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 636

• Message text: You are not authorized to undo the lock for 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 undo
a material's lock.

Procedure for System Administrators

If the user is to be authorized to undo a material's lock,
assign the authorization object <DS:UO.M_MATE_MAF>M_MATE_MAF</> to the
user.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MM636 - You are not authorized to undo the lock for material &1 ?

  The SAP error message MM636, which states "You are not authorized to undo the lock for material &1," typically occurs when a user attempts to unlock a material that is currently locked by another user or process, but does not have the necessary authorization to perform this action.
  Cause:
  
  Authorization Issues: The user does not have the required authorization to unlock the material. This could be due to missing roles or permissions in their user profile.
  Material Lock: The material is locked by another user or process, and the current user is not permitted to override this lock.
  System Configuration: There may be specific configurations in the SAP system that restrict certain users from unlocking materials.
  
  Solution:
  
  
  Check User Authorizations:
  
  Verify the user's roles and authorizations in the SAP system. This can be done by checking the user profile in transaction code SU01 or SUIM.
  Ensure that the user has the necessary authorizations for the relevant transactions (e.g., MM02 for material changes).
  
  
  
  Contact System Administrator:
  
  If the user does not have the required authorizations, they should contact their SAP security administrator to request the necessary permissions.
  The administrator can review the authorization objects related to material management (e.g., M_MATE_WRK, M_MATE_DATA) and adjust them as needed.
  
  
  
  Identify the Lock:
  
  Use transaction code SM12 to check which user or process has locked the material. This transaction allows you to view and manage locks in the system.
  If the lock is no longer needed, and if the user has the appropriate permissions, they can remove the lock from this transaction.
  
  
  
  Wait for Release:
  
  If the lock is held by another user who is actively working on the material, it may be best to wait until they complete their task and release the lock.
  
  
  
  Review System Configuration:
  
  If the issue persists, it may be necessary to review the system configuration or consult with SAP support to ensure that there are no underlying issues affecting authorization checks.
  
  
  
  Related Information:
  
  Transaction Codes:
  
  SU01: User Maintenance
  SUIM: User Information System
  SM12: Display and Delete Locks
  MM02: Change Material
  
  
  Authorization Objects: Familiarize yourself with the relevant authorization objects that control access to material management functions.
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to authorization and locking mechanisms.
  
  By following these steps, you should be able to resolve the MM636 error and gain the necessary access to unlock the material.