How To Fix /ACCGO/CCK_DPQS185 - Could not lock subnode; lock for supernode not acquired

SAP Error Message - Details

• Message type: E = Error

• Message class: /ACCGO/CCK_DPQS -

• Message number: 185

• Message text: Could not lock subnode; lock for supernode not acquired

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /ACCGO/CCK_DPQS185 - Could not lock subnode; lock for supernode not acquired ?

  The SAP error message /ACCGO/CCK_DPQS185 Could not lock subnode; lock for supernode not acquired typically occurs in the context of the SAP system's data processing, particularly when dealing with hierarchical data structures or nodes in a configuration or master data context. This error indicates that the system is unable to acquire a lock on a specific subnode because it could not obtain a lock on its parent (supernode).
  Causes:
  
  Concurrent Access: Another user or process may already have a lock on the supernode, preventing your transaction from acquiring the necessary lock.
  Long-Running Transactions: If a transaction is taking too long to complete, it may hold locks longer than expected, causing other transactions to fail.
  Deadlocks: In some cases, a deadlock situation may arise where two or more processes are waiting for each other to release locks.
  System Configuration Issues: There may be configuration settings that affect how locks are managed in the system.
  
  Solutions:
  
  Check Lock Entries: Use transaction code SM12 to check for existing lock entries. Identify if another user or process is holding the lock on the supernode and coordinate with them to release it.
  Wait and Retry: If the lock is held by a long-running transaction, you may need to wait for it to complete before retrying your operation.
  Optimize Transactions: Review the transactions that are causing locks to ensure they are optimized and do not hold locks longer than necessary.
  Increase Lock Timeout: If applicable, consider increasing the lock timeout settings in the system configuration to allow for longer wait times before a lock is considered unavailable.
  Check for Deadlocks: If you suspect a deadlock, analyze the system logs or use transaction SM21 to identify and resolve any deadlock situations.
  Contact SAP Support: If the issue persists and you cannot identify the cause, consider reaching out to SAP support for further assistance.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM12 (for lock entries), SM21 (for system logs), and ST22 (for dumps) to diagnose issues.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  System Performance: Monitor system performance and user activity to identify patterns that may lead to locking issues.
  
  By following these steps, you should be able to diagnose and resolve the error related to locking subnodes in your SAP system.