How To Fix /PF1/MSG_PO_CH_BAPI063 - Lock request failed; Exception &1

SAP Error Message - Details

• Message type: E = Error

• Message class: /PF1/MSG_PO_CH_BAPI -

• Message number: 063

• Message text: Lock request failed; Exception &1

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /PF1/MSG_PO_CH_BAPI063 - Lock request failed; Exception &1 ?

  The SAP error message /PF1/MSG_PO_CH_BAPI063 Lock request failed; Exception &1 typically indicates that there was an issue with a lock request in the SAP system. This error can occur in various scenarios, often related to the processing of purchase orders or other transactional data where concurrent access is involved.
  Cause:
  
  
  Lock Contention: The most common cause of this error is that another transaction is holding a lock on the same object (e.g., a purchase order) that your transaction is trying to access. This can happen if multiple users or processes are trying to modify the same data simultaneously.
  
  
  Long-Running Transactions: If a transaction takes too long to complete, it can hold locks longer than expected, leading to contention issues.
  
  
  System Configuration: There may be configuration issues in the SAP system that affect how locks are managed.
  
  
  Database Issues: Sometimes, underlying database issues can lead to lock request failures.
  
  
  Solution:
  
  
  Retry the Operation: Often, simply retrying the operation after a short wait can resolve the issue, especially if it was caused by temporary lock contention.
  
  
  Check for Long-Running Transactions: Use transaction codes like SM12 (to view and manage locks) and SM21 (to check system logs) to identify if there are any long-running transactions that are holding locks.
  
  
  Analyze Lock Entries: In SM12, you can check for existing lock entries and see if there are any that are blocking your transaction. If necessary, you can delete the lock entries (with caution) if they are no longer valid.
  
  
  Increase Timeout Settings: If the issue is frequent, consider increasing the timeout settings for lock requests in the system configuration.
  
  
  Review Custom Code: If the error occurs in a custom program or BAPI, review the code to ensure that it is handling locks appropriately and not causing unnecessary contention.
  
  
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  SM12: To view and manage lock entries.
  SM21: To view system logs for errors and warnings.
  ST22: To check for dumps that may provide more context on the error.
  
  
  
  SAP Documentation: Refer to the official SAP documentation for more details on lock management and handling exceptions.
  
  
  Performance Monitoring: Use transaction ST03N to analyze performance and identify any bottlenecks that may be causing long-running transactions.
  
  
  If the issue persists after trying the above solutions, it may be necessary to involve your SAP Basis team or SAP support for further investigation.