How To Fix JITOUT102 - System error while (un-)locking a call

SAP Error Message - Details

• Message type: E = Error

• Message class: JITOUT - Messages for JIT Outbound

• Message number: 102

• Message text: System error while (un-)locking a call

What causes this issue?

A system error occurred while trying to lock or unlock a call. The call
involved was:
-,,internal call number ,,= &v1&
-,,external call number ,,= &v2&
-,,vendor ,,,,,,= &v3&

System Response

How to fix this error?

Re-execute the function (after waiting for a few minutes). If the error
is still there, check the lock entries using transaction
<DS:TRAN.SM12>Select Lock Entries</> or contact your systems
administrator.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message JITOUT102 - System error while (un-)locking a call ?

  The SAP error message JITOUT102, which indicates a "System error while (un-)locking a call," typically occurs in the context of the SAP system when there is an issue with the locking mechanism that is used to manage concurrent access to resources, such as calls or transactions.
  Causes:
  
  Database Lock Issues: The error may arise due to problems with database locks, where a resource is locked by one process and cannot be accessed by another.
  System Performance: High system load or performance issues can lead to timeouts or failures in the locking mechanism.
  Configuration Issues: Incorrect configuration settings in the SAP system can lead to locking problems.
  Transport Issues: If there are issues with transport requests or changes that have not been properly imported, it can lead to inconsistencies in the system.
  Program Errors: Bugs or errors in custom ABAP programs or enhancements that interact with the locking mechanism can also trigger this error.
  
  Solutions:
  
  Check Lock Entries: Use transaction code SM12 to check for existing lock entries. If there are stale or orphaned locks, you may need to delete them.
  System Performance Monitoring: Monitor system performance using transaction codes like ST22 (dump analysis) and SM21 (system log) to identify any underlying issues that may be affecting performance.
  Review Configuration: Ensure that the configuration settings related to locking and database connections are correct.
  Transport Management: Check for any transport issues. Ensure that all necessary transports have been imported correctly and that there are no inconsistencies.
  Debugging: If the error is related to custom code, consider debugging the relevant ABAP programs to identify any logical errors or issues with the locking mechanism.
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error. There may be patches or updates available that resolve known issues.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SM12 (lock entries), SM21 (system log), ST22 (dump analysis), and SM37 (job monitoring) for troubleshooting.
  SAP Support: If the issue persists, consider reaching out to SAP Support for assistance, providing them with detailed information about the error, including any relevant logs or screenshots.
  Documentation: Review SAP documentation and community forums for additional insights and solutions shared by other users who may have encountered similar issues.
  
  By following these steps, you should be able to diagnose and resolve the JITOUT102 error in your SAP system.