How To Fix CM_RGG028 - Data is locked by another user

SAP Error Message - Details

• Message type: E = Error

• Message class: CM_RGG - Report Generation Groups

• Message number: 028

• Message text: Data is locked by another user

What causes this issue?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

System Response

The requested data is displayed only and cannot be edited.

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CM_RGG028 - Data is locked by another user ?

  The SAP error message CM_RGG028, which states "Data is locked by another user," typically occurs when a user attempts to access or modify data that is currently being used or locked by another user in the SAP system. This locking mechanism is a standard feature in SAP to ensure data integrity and prevent conflicts during concurrent access.
  Cause:
  
  Concurrent Access: Another user is currently editing or processing the same data.
  Session Timeout: A previous session may not have released the lock due to a timeout or an unexpected termination.
  Long-running Transactions: A transaction that takes a long time to complete may hold locks longer than expected.
  Lock Table Entries: Locks may not be released properly due to system issues or bugs.
  
  Solution:
  
  Wait and Retry: If the lock is temporary, waiting for the other user to finish their transaction may resolve the issue.
  Identify the Lock: Use transaction codes like SM12 (Display and Manage Locks) to identify which user or session is holding the lock. You can check the lock entries and see if you can contact the user to release the lock.
  Release the Lock: If you have the necessary authorizations, you can manually delete the lock entry in SM12. However, this should be done with caution, as it may lead to data inconsistencies if the other user is still working on the data.
  Check for Long-running Transactions: If a transaction is taking too long, investigate and optimize it if possible.
  System Monitoring: Regularly monitor the system for lock situations and address any underlying issues that may cause frequent locking.
  
  Related Information:
  
  Transaction Codes:
  
  SM12: To view and manage lock entries.
  SM21: To check system logs for any related errors or warnings.
  ST22: To check for dumps that may indicate underlying issues.
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to locking behavior.
  User Training: Ensure that users are trained on how to properly exit transactions to avoid leaving locks in place.
  
  Best Practices:
  
  Encourage users to log off properly after completing their tasks.
  Implement a monitoring strategy to identify and resolve locking issues proactively.
  Consider reviewing and optimizing long-running transactions to minimize locking occurrences.
  
  If the issue persists or if you are unsure about taking any actions, it is advisable to consult with your SAP Basis team or SAP support for further assistance.