How To Fix OQ_E170 - Object & could not be locked

SAP Error Message - Details

• Message type: E = Error

• Message class: OQ_E - IS-Oil SSR : Message pool Payment Card Processing

• Message number: 170

• Message text: Object & could not be locked

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message OQ_E170 - Object & could not be locked ?

  The SAP error message OQ_E170, which states "Object & could not be locked," typically occurs when a user or process attempts to access or modify an object (such as a material, document, or other data) that is currently locked by another user or process. This locking mechanism is a part of SAP's concurrency control to ensure data integrity and prevent conflicts during simultaneous access.
  Causes:
  
  Concurrent Access: Another user or process is currently using the object, leading to a lock.
  Long-Running Transactions: A transaction that takes a long time to complete may hold a lock on the object longer than expected.
  Uncommitted Changes: If a user has made changes to the object but has not yet committed those changes, the object remains locked.
  System Errors: Occasionally, system errors or crashes can leave locks in place that are not released properly.
  Background Jobs: Background jobs that are processing the same object can also lead to locking issues.
  
  Solutions:
  
  Wait and Retry: If the lock is temporary, waiting for the other user or process to complete their transaction may resolve the issue.
  Identify the Lock: Use transaction codes like SM12 (Display and Delete Locks) to identify which user or process is holding the lock on the object. You can then contact the user or administrator to resolve the issue.
  Release the Lock: If you have the necessary authorizations, you can manually release the lock from SM12. However, this should be done with caution to avoid data inconsistencies.
  Check for Long-Running Transactions: Review any long-running transactions that may be holding locks and address them accordingly.
  System Monitoring: Implement monitoring to track locking issues and identify patterns that may lead to frequent locking problems.
  
  Related Information:
  
  Transaction Codes:
  
  SM12: To view and manage locks.
  SM21: To check system logs for errors that may indicate why locks are not being released.
  ST22: To check for dumps that may have caused locks.
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to locking mechanisms in your specific version of SAP.
  Documentation: Review SAP documentation on locking mechanisms and best practices for managing concurrent access to objects.
  
  If the problem persists or if you are unsure about how to proceed, it may be beneficial to consult with your SAP Basis team or SAP support for further assistance.