How To Fix SDEST005 - Error in Class Library; lock not possible

SDEST005 - Overview

• Message type: E = Error

• Message class: SDEST - Messages for RFC Destinations

• Message number: 005

• Message text: Error in Class Library; lock not possible

What causes this issue?

Program &v1& attempted to lock destination &v2& against changes by two
different objects. However, the class library used only permits one
object to request an SAP lock for a destination.

System Response

A class library exception is raised.

How to fix this error?

The program &v1& must be adapted to the class library. Contact the user
responsible for the program.

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 SDEST005 - Error in Class Library; lock not possible ?

  The SAP error message SDEST005 indicates that there is an issue with the class library, specifically that a lock cannot be obtained. This error typically occurs in the context of SAP's spool and output management system, often when trying to access or manipulate spool requests or output devices.
  Causes:
  
  Concurrency Issues: The error may arise when multiple processes are trying to access the same resource simultaneously, leading to a lock contention.
  Database Lock: A database lock might be held by another transaction, preventing the current transaction from obtaining the necessary lock.
  
  Configuration Issues: Incorrect configuration of the output device or spool settings can lead to this error.
  System Performance: High system load or performance issues can also lead to locking problems.
  
  Solutions:
  
  Check for Locks: Use transaction code SM12 to check for existing locks in the system. If you find locks that are no longer needed, you can delete them (ensure that you have the necessary authorizations).
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