How To Fix CCSEQ012 - The change sequence graph could not be locked

SAP Error Message - Details

• Message type: E = Error

• Message class: CCSEQ - Change sequence graph

• Message number: 012

• Message text: The change sequence graph could not be locked

What causes this issue?

A technical error occurred when locking the change sequence graph.

System Response

The system could not lock table CCSEQ.

How to fix this error?

Contact your administrator.
Try to reproduce the error and describe under which circumstances the
error message occurred.

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 CCSEQ012 - The change sequence graph could not be locked ?

  The SAP error message CCSEQ012 indicates that the change sequence graph could not be locked. This error typically occurs in the context of SAP's Controlling (CO) module, particularly when dealing with cost center accounting, internal orders, or other related functionalities that involve change sequences.
  Causes:
  
  Concurrent Access: The most common cause of this error is that another user or process is currently accessing the change sequence graph, preventing your session from obtaining the necessary lock.
  Long-Running Transactions: If a transaction is taking too long to complete, it may hold the lock longer than expected, leading to this error for subsequent users.
  System Performance Issues: High system load or performance issues can lead to delays in locking mechanisms, causing timeouts.
  Database Locking Issues: There may be underlying database locking issues that prevent the change sequence graph from being locked.
  
  Solutions:
  
  Retry the Operation: Often, simply waiting a few moments and retrying the operation can resolve the issue if it was caused by temporary concurrent access.
  Check for Active Sessions: Use transaction codes like SM12 (to check for locks) to see if there are any active sessions holding locks on the change sequence graph. If you find any, you may need to coordinate with the user or administrator to release the lock.
  Review Long-Running Transactions: Identify any long-running transactions that may be holding locks and address them. This may involve optimizing the transaction or terminating it if it is no longer needed.
  System Performance Monitoring: Monitor system performance to ensure that it is operating within acceptable parameters. If performance issues are identified, consider optimizing the system or addressing any underlying issues.
  Database Administration: If the issue persists, it may be necessary to involve your database administrator to investigate any locking issues at the database level.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM12 (to view and manage locks), SM21 (to check system logs), and ST22 (to check for dumps).
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  User Coordination: If multiple users are working on the same data, ensure that there is proper coordination to avoid conflicts.
  
  If the problem persists after trying the above solutions, it may be beneficial to consult with your SAP Basis team or SAP support for further assistance.