How To Fix CL158 - Class type &: & & is in use; note the change to the status

SAP Error Message - Details

• Message type: E = Error

• Message class: CL - Classification

• Message number: 158

• Message text: Class type &: & & is in use; note the change to the status

What causes this issue?

&V2& &V3& of class type &V1& is used in configurable objects
(BOMs, task lists).

System Response

The system checks the usages that exist. Any status change that you
make can cause inconsistencies.

How to fix this error?

<DS:TRAN.CSC5>Proceed</>
ENDIF

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CL158 - Class type &: & & is in use; note the change to the status ?

  The SAP error message CL158 indicates that a class type is currently in use, which prevents certain changes from being made to it. This message typically arises when you attempt to modify a class that is being referenced or utilized in some way, such as being instantiated in an object or being used in a program.
  Cause:
  
  
  Active Usage: The class type you are trying to modify is currently being used in the system. This could be due to:
  
  Instances of the class being created.
  The class being referenced in other programs or classes.
  The class being part of a transaction that is currently active.
  
  
  
  Locking Mechanism: SAP employs a locking mechanism to prevent changes to objects that are in use, ensuring data integrity and consistency.
  
  
  Solution:
  
  
  Check Usage: Identify where the class is being used. You can do this by:
  
  Using transaction codes like SE80 (Object Navigator) or SE11 (Data Dictionary) to find references to the class.
  Checking for any active sessions or transactions that might be using the class.
  
  
  
  Release Locks: If you find that the class is locked due to active usage:
  
  Ensure that all sessions or transactions using the class are closed.
  If necessary, coordinate with other users to ensure they are not using the class before making changes.
  
  
  
  Change Status: If you need to change the status of the class (e.g., from "in development" to "released"), ensure that all changes are saved and that the class is not being actively used.
  
  
  Transport Requests: If the class is part of a transport request, ensure that the transport is released and not in a state that would prevent changes.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SE80 (Object Navigator), SE11 (Data Dictionary), and SE37 (Function Builder) to navigate and manage classes effectively.
  Documentation: Review SAP documentation or help files related to class management and object locking for more detailed guidance.
  SAP Notes: Check SAP Notes for any known issues or additional troubleshooting steps related to this error message.
  
  If the issue persists after following these steps, consider reaching out to your SAP Basis or development team for further assistance.