How To Fix /ISDFPS/PM_RELOC_CHK121 - Cannot wait for lock on equipment &1 to be released

SAP Error Message - Details

• Message type: E = Error

• Message class: /ISDFPS/PM_RELOC_CHK -

• Message number: 121

• Message text: Cannot wait for lock on equipment &1 to be released

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /ISDFPS/PM_RELOC_CHK121 - Cannot wait for lock on equipment &1 to be released ?

  The SAP error message /ISDFPS/PM_RELOC_CHK121 indicates that there is a lock on a piece of equipment (identified by &1) that is preventing the current operation from proceeding. This typically occurs in scenarios where multiple users or processes are trying to access or modify the same equipment data simultaneously.
  Cause:
  
  Concurrent Access: Another user or process is currently using the equipment, which has resulted in a lock being placed on it.
  Long-Running Transactions: A transaction that is taking longer than expected may hold the lock for an extended period.
  System Configuration: The system may be configured to enforce strict locking mechanisms for certain operations, leading to this error when trying to access locked resources.
  
  Solution:
  
  Wait and Retry: If the lock is temporary, waiting for a few moments and then retrying the operation may resolve the issue.
  Identify the Locking User/Process:
  
  Use transaction code SM12 to check for locks on the equipment. You can filter by the equipment number to see which user or process is holding the lock.
  If necessary, you can contact the user or administrator to resolve the situation.
  
  
  Check for Long-Running Transactions: Use transaction code SM66 to monitor active processes and identify any long-running transactions that may be holding locks.
  System Configuration Review: If this issue occurs frequently, it may be worth reviewing the system's locking strategy and configuration to see if adjustments can be made to reduce contention.
  Error Handling in Custom Code: If this error arises from custom ABAP code, ensure that proper error handling is implemented to manage locking scenarios gracefully.
  
  Related Information:
  
  Lock Management: Understanding how SAP handles locks is crucial. Locks are typically managed at the database level, and SAP uses various types of locks (e.g., exclusive, shared) to control access to data.
  Transaction Codes:
  
  SM12: Display and manage locks.
  SM66: Global overview of active processes.
  SM21: Check system logs for any related errors or warnings.
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. You can search the SAP Support Portal for relevant notes.
  
  If the problem persists after trying the above solutions, it may be necessary to involve your SAP Basis team or SAP support for further investigation.