How To Fix KT157 - Data blocked by & (Table &)

SAP Error Message - Details

• Message type: E = Error

• Message class: KT - RK Message Table Maintenance

• Message number: 157

• Message text: Data blocked by & (Table &)

What causes this issue?

When maintaining a controlling area, all the tables affected are locked
in sequence before the transactions are carried out. This is for
consistency reasons. If a particular table (&V2&) cannot be locked
because it is being processed by another user (&V1&), no controlling
areas can be maintained and you move to the display function.

System Response

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

How to fix this error?

Contact the user locking table &V2& (perhaps you are locking the table
in a different session) to release the table for maintenance.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message KT157 - Data blocked by & (Table &) ?

  The SAP error message KT157, which states "Data blocked by & (Table &)," typically indicates that a particular data record in a specified table is currently locked or blocked by another user or process. This can happen in various scenarios, such as when a user is editing a record, or when a transaction is not completed properly, leaving the data in a locked state.
  Cause:
  
  User Lock: Another user is currently editing the record or has it locked due to an ongoing transaction.
  System Lock: A background job or process is holding a lock on the data.
  Transaction Issues: An incomplete transaction may have left the data in a locked state.
  Database Lock: The database itself may have a lock on the table due to various reasons, such as maintenance or backup processes.
  
  Solution:
  
  
  Identify the Lock:
  
  Use transaction code SM12 to check for locks. This transaction allows you to view and manage user locks in the system.
  Look for the user or process that is holding the lock on the specific table or record.
  
  
  
  Release the Lock:
  
  If you identify a user lock that is no longer needed, you can manually delete the lock entry from SM12 (if you have the necessary authorizations).
  If the lock is held by a background job, you may need to wait for the job to complete or contact your system administrator to release it.
  
  
  
  Check for Incomplete Transactions:
  
  If the lock is due to an incomplete transaction, you may need to complete or roll back the transaction to release the lock.
  
  
  
  Consult with IT Support:
  
  If you are unable to resolve the issue, it may be necessary to consult with your IT support team or SAP Basis team for further assistance.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SM12: To view and manage user locks.
  SM21: To check system logs for any related errors or issues.
  ST22: To check for dumps that may provide additional context on the issue.
  
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. You can search for KT157 in the SAP Support Portal.
  
  
  Documentation: Review SAP documentation for more details on data locking mechanisms and how to handle locks in SAP systems.
  
  
  By following these steps, you should be able to identify the cause of the KT157 error and take appropriate action to resolve it.