How To Fix CL144 - The class is in use

CL144 - Overview

• Message type: E = Error

• Message class: CL - Classification

• Message number: 144

• Message text: The class is in use

What causes this issue?

You have changed the status of a class to a status that does not allow
classification with this class.
However, this class is already in use in
<DS:GLOS.variant_configuration>variant configuration</> in one the
following ways:
The class is used as a class item in BOMs of
<DS:GLOS.configurable_material>configurable materials</>.
The class is used in <DS:GLOS.object_dependencies>object
dependencies</>. In this context, a class can be used to access an
object via the class to which it is allocated.
A configurable material has been allocated to the class in the
<DS:GLOS.configuration_profile>configuration profile</>.
Any change you make to the status may lead to inconsistencies or
prevent you from using the class again for these purposes.

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

System Response

How to fix this error?

Please check whether you really want to make this change.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CL144 - The class is in use ?

  The SAP error message CL144 ("The class is in use") typically occurs when you attempt to delete or modify a class that is currently being used in the system. This can happen in various scenarios, such as when the class is being referenced in other objects (like methods, interfaces, or other classes) or if it is part of a transport request that is still active.
  
  Cause:
  
  Active References: The class is being referenced by other classes, methods, or programs.
  Transport Requests: The class is part of a transport request that has not been released or is still in use.
  Locking Mechanism: The class might be locked by another user or process, preventing modifications.
  
  
  Solution:
  
  
  Check References: 
  
  Use transaction code SE80 (Object Navigator) or SE11 (Data Dictionary) to check for references to the class. Look for any dependent objects that might be using the class.
  You can also use the "Where-Used List" feature (Shift + F3) to find