How To Fix 61628 - MRP groups are blocked by another user

SAP Error Message - Details

• Message type: E = Error

• Message class: 61 - Fehlermeldungen fuer Bedarfsplanung

• Message number: 628

• Message text: MRP groups are blocked by another user

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message 61628 - MRP groups are blocked by another user ?

  The SAP error message "61628 MRP groups are blocked by another user" typically occurs in the context of Material Requirements Planning (MRP) when a user attempts to execute MRP-related transactions or processes that are currently being accessed or modified by another user. This blocking mechanism is in place to prevent data inconsistencies and ensure that MRP runs are not interrupted or corrupted.
  Cause:
  
  Concurrent Access: Another user is currently running an MRP process that involves the same MRP group or planning area.
  Long-Running Processes: The MRP process initiated by another user is taking longer than expected, leading to a lock on the MRP group.
  System Configuration: The system may be configured to allow only one user to access a specific MRP group at a time.
  
  Solution:
  
  Wait and Retry: The simplest solution is to wait for the other user to complete their MRP run. You can check with your colleagues to see if they are running MRP for the same group.
  Check Lock Entries: Use transaction code SM12 to check for lock entries. You can see which user is holding the lock and the MRP group involved. If necessary, you can contact that user to coordinate.
  Release Locks: If you have the necessary authorizations and it is appropriate to do so, you can manually delete the lock entries in SM12. However, this should be done with caution, as it may lead to data inconsistencies.
  Review MRP Group Settings: If this issue occurs frequently, consider reviewing the configuration of MRP groups to see if adjustments can be made to allow for more flexible access.
  System Monitoring: Implement monitoring to identify long-running MRP processes and optimize them to reduce the likelihood of blocking issues.
  
  Related Information:
  
  Transaction Codes: 
  
  MD01 - MRP Run
  MD02 - MRP Run for Single Material
  SM12 - Display and manage lock entries
  SM21 - System log for monitoring issues
  
  
  Documentation: Refer to SAP Help documentation for MRP and locking mechanisms for more detailed information on how MRP processes work and how locks are managed.
  User Coordination: Establish a protocol within your team for running MRP processes to minimize conflicts, such as scheduling MRP runs during off-peak hours.
  
  If the problem persists or if you are unsure about taking any actions, it is advisable to consult with your SAP Basis team or system administrator for further assistance.