How To Fix CL592 - Class type & could not be changed

SAP Error Message - Details

• Message type: E = Error

• Message class: CL - Classification

• Message number: 592

• Message text: Class type & could not be changed

What causes this issue?

Conversion using program RCCLUKA2 simultaneously adjusts the Customizing
of the specified class type. An error occurred when accessing the
related database table.

System Response

Program RCCLUKA2 is terminated. No conversion takes place, and the
Customizing remains unchanged.

How to fix this error?

Check whether there is any concurrent access to the tables TCLA, TCLAO,
or TCLAX, or whether the tables TCLAO or TCLAX already contain entries
for the specified class type.

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 CL592 - Class type & could not be changed ?

  The SAP error message CL592, which states "Class type & could not be changed," typically occurs when there is an attempt to change the class type of a class in the SAP system, but the system does not allow this change due to certain restrictions or conditions.
  Cause:
  
  
  Class Type Restrictions: In SAP, class types (e.g., class type 001 for material classes, class type 002 for service classes, etc.) are predefined and have specific characteristics. Changing the class type of an existing class is not allowed if it violates the integrity of the data or the relationships established in the system.
  
  
  Existing Dependencies: If there are existing dependencies or references to the class (e.g., objects, attributes, or methods), the system may prevent changes to ensure data consistency.
  
  
  Authorization Issues: The user may not have the necessary authorizations to make changes to the class type.
  
  
  System Configuration: Certain configurations in the system may restrict changes to class types.
  
  
  Solution:
  
  
  Check Class Type: Verify the class type you are trying to change. Ensure that the change you are attempting is valid and does not violate any SAP rules.
  
  
  Review Dependencies: Check for any existing dependencies or references to the class. If there are objects or attributes linked to the class, you may need to remove or modify those before changing the class type.
  
  
  Authorization Check: Ensure that you have the necessary authorizations to make changes to class types. You may need to contact your SAP security administrator to verify your permissions.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for specific guidelines on class types and their restrictions.
  
  
  Create a New Class: If changing the class type is not possible, consider creating a new class with the desired class type and migrating any necessary data or attributes from the old class to the new one.
  
  
  Contact SAP Support: If you are unable to resolve the issue, consider reaching out to SAP support for assistance, especially if you suspect it may be a system bug or configuration issue.
  
  
  Related Information:
  
  SAP Class Management: Understanding how class types work in SAP and the implications of changing them is crucial. Familiarize yourself with the class management functionalities in SAP.
  Transaction Codes: Use transaction codes like CL02 (Change Class) and CL03 (Display Class) to manage classes and check their properties.
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address specific issues related to class types and error messages.
  
  By following these steps, you should be able to identify the cause of the error and take appropriate action to resolve it.