How To Fix 56216 - Locking not possible (internal error)

SAP Error Message - Details

• Message type: E = Error

• Message class: 56 - HR TRAVEL: Messages for Trip Costs Dialog

• Message number: 216

• Message text: Locking not possible (internal error)

What causes this issue?

Due to an error situation, the personnel number entered can not be
locked.

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 your system administrator.

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 56216 - Locking not possible (internal error) ?

  The SAP error message "56216 Locking not possible (internal error)" typically indicates an issue related to the locking mechanism within the SAP system. This error can occur in various scenarios, such as when trying to access or modify data that is currently locked by another process or when there is an internal inconsistency in the locking tables.
  Causes:
  
  Database Lock Conflicts: Another transaction may have locked the object you are trying to access, preventing your transaction from obtaining the necessary lock.
  Internal System Errors: There may be an internal inconsistency or corruption in the locking tables or the database.
  Long-running Transactions: If a transaction is taking too long to complete, it may hold locks longer than expected, causing conflicts.
  System Configuration Issues: Misconfigurations in the SAP system or database settings can lead to locking issues.
  Transport Requests: If you are working with transport requests, there may be issues with locks related to the transport process.
  
  Solutions:
  
  Check for Active Locks: Use transaction code SM12 to check for active locks. You can identify the user or process holding the lock and take appropriate action, such as waiting for the lock to be released or contacting the user.
  Release Locks: If you find unnecessary locks, you can manually release them using SM12, but be cautious as this may affect other users.
  Review Long-running Transactions: Identify and analyze any long-running transactions that may be holding locks. You can use transaction SM66 to monitor active processes.
  System Restart: In some cases, a system restart may help clear internal inconsistencies, but this should be done with caution and typically as a last resort.
  Check System Logs: Review the system logs (transaction SM21) for any related error messages that could provide more context about the issue.
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide patches or updates.
  Contact SAP Support: If the issue persists and you cannot resolve it, consider reaching out to SAP Support for further assistance.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM12 (Lock Entries), SM21 (System Log), and SM66 (Global Work Process Overview).
  SAP Basis Team: Collaborate with your SAP Basis team, as they can provide insights into system performance and configuration that may be contributing to the issue.
  Documentation: Review SAP documentation and community forums for additional troubleshooting steps and user experiences related to this error.
  
  By following these steps, you should be able to diagnose and potentially resolve the "56216 Locking not possible (internal error)" in your SAP system.