How To Fix HD121 - Transaction &2 in company code &1 already being processed by user &3

SAP Error Message - Details

• Message type: E = Error

• Message class: HD - Messages for forex hedging

• Message number: 121

• Message text: Transaction &2 in company code &1 already being processed by user &3

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message HD121 - Transaction &2 in company code &1 already being processed by user &3 ?

  The SAP error message HD121 indicates that a transaction is already being processed by another user in the specified company code. This typically occurs in scenarios where multiple users are trying to access or modify the same data simultaneously, leading to a lock situation to prevent data inconsistencies.
  Cause:
  
  Concurrent Access: Another user is currently processing the same transaction in the specified company code.
  Session Lock: The transaction may have been left open by a user, causing a lock on that transaction.
  Long-running Transactions: If a transaction takes a long time to complete, it can block other users from accessing it.
  
  Solution:
  
  Wait and Retry: If the transaction is being processed by another user, the simplest solution is to wait until that user completes their transaction and then try again.
  Identify the User: If you have the necessary authorizations, you can check which user is currently processing the transaction. This can be done using transaction codes like SM12 (to view lock entries) or SM21 (to view system logs).
  Contact the User: If possible, contact the user who is processing the transaction to see if they can complete it or release the lock.
  Release Locks: If the transaction is stuck and the user is no longer available, a system administrator can release the lock using transaction SM12. However, this should be done with caution to avoid data inconsistencies.
  Review Transaction Design: If this issue occurs frequently, it may be worth reviewing the design of the transaction to see if it can be optimized to reduce lock contention.
  
  Related Information:
  
  Transaction Codes: 
  
  SM12: To view and manage lock entries.
  SM21: To check system logs for any related issues.
  SM37: To monitor background jobs that may be related to the transaction.
  
  
  User Communication: Establishing a protocol for users to communicate when they are working on critical transactions can help mitigate this issue.
  System Performance: Regularly monitor system performance and transaction processing times to identify any bottlenecks that may lead to prolonged locks.
  
  By following these steps, you should be able to resolve the HD121 error and minimize its occurrence in the future.