How To Fix PPC1DM505 - Table with header information locked by user &1

SAP Error Message - Details

• Message type: E = Error

• Message class: PPC1DM - PP Backflush: Database Management and Communication

• Message number: 505

• Message text: Table with header information locked by user &1

What causes this issue?

The system records the header information for backflushing in Table
PPC_HEAD. This Table is currently locked by user &V1&. Despite several
attempts, the lock remains.

System Response

At the moment, the system cannot accept the new backflush and rejects
it.

How to fix this error?

Try to carry out the backflush later. If necessary, contact the user
locking the data. If the error persists, contact your system
administrator.

Procedure for System Administrators

If the lock is not released, check the entries of the lock management.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message PPC1DM505 - Table with header information locked by user &1 ?

  The SAP error message PPC1DM505 indicates that a table with header information is locked by a specific user (denoted by &1). This typically occurs in scenarios where multiple users or processes are trying to access or modify the same data simultaneously, leading to a lock situation to maintain data integrity.
  Cause:
  
  User Lock: The user mentioned in the error message has an active session that is locking the table. This can happen if the user is currently editing or has not properly released the lock after completing their transaction.
  Long-running Transactions: If a transaction takes too long to complete, it may hold locks longer than expected, preventing other users from accessing the same data.
  System Configuration: Certain configurations or custom developments may lead to unexpected locking behavior.
  
  Solution:
  
  Identify the User: Check which user is holding the lock. You can do this by using transaction codes like SM12 (for lock entries) to see the locks currently held in the system.
  Release the Lock: If the user is no longer active or if the lock is no longer needed, an administrator can manually release the lock from the SM12 transaction.
  Communicate with the User: If the user is still working, communicate with them to ensure they complete their transaction and release the lock.
  Review Transaction Logic: If this error occurs frequently, review the logic of the transactions that are causing the locks. Optimize the processes to minimize lock duration.
  Increase Timeout Settings: In some cases, adjusting the timeout settings for locks may help, but this should be done with caution and in consultation with your SAP Basis team.
  
  Related Information:
  
  Transaction Codes:
  
  SM12: To view and manage lock entries.
  SM21: To check system logs for any related issues.
  ST22: To check for dumps that might indicate underlying issues.
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to locking behavior in your specific version of SAP.
  Performance Monitoring: Use transaction ST04 or ST03N to monitor performance and identify long-running transactions that may be causing locks.
  
  If the problem persists after trying the above solutions, it may be necessary to involve your SAP Basis team or consult SAP support for further assistance.