How To Fix CNV_MBT531 - User locking not allowed.

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_MBT - PCL message class

• Message number: 531

• Message text: User locking not allowed.

What causes this issue?

The program for locking the user is checking the Global Parameter
GLOBL_NO_USER_LOCKING. If the Global Parameter is set to 'X' then no
locking of the user is allowed and the program is ending with this
message.

System Response

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

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_MBT531 - User locking not allowed. ?

  The SAP error message CNV_MBT531: User locking not allowed typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or other migration tools. This error indicates that the system is trying to lock a user for a specific operation, but the locking mechanism is not permitted in the current context.
  Causes:
  
  User Locking Configuration: The system may be configured to prevent user locking during certain operations, which can lead to this error.
  Migration Process: The migration process may be attempting to lock a user account that is not allowed to be locked due to system settings or user roles.
  Authorization Issues: The user executing the migration may not have the necessary authorizations to perform user locking operations.
  Technical Restrictions: Certain technical restrictions in the SAP system or specific migration scenarios may prevent user locking.
  
  Solutions:
  
  Check User Locking Settings: Review the configuration settings related to user locking in your SAP system. Ensure that the settings allow for user locking during the migration process if required.
  Review Migration Process: If you are using a specific migration tool or process, check the documentation to see if there are any prerequisites or configurations needed to allow user locking.
  User Authorizations: Ensure that the user executing the migration has the necessary authorizations to perform user locking. You may need to consult with your SAP security team to verify and adjust the user's roles and permissions.
  Consult SAP Notes: Look for relevant SAP Notes that may address this specific error. SAP frequently releases notes that provide solutions or workarounds for known issues.
  Contact SAP Support: If the issue persists and you cannot find a resolution, consider reaching out to SAP Support for assistance. Provide them with detailed information about the error and the context in which it occurs.
  
  Related Information:
  
  SAP Documentation: Review the official SAP documentation for the migration tool you are using, as it may contain specific guidelines or troubleshooting steps related to user locking.
  Community Forums: Check SAP Community forums or other user groups where similar issues may have been discussed. Other users may have encountered the same error and found solutions.
  System Logs: Analyze system logs (such as ST22 for dumps or SM21 for system logs) to gather more context about the error and any related issues that may be occurring.
  
  By following these steps, you should be able to identify the cause of the error and implement a suitable solution.