How To Fix CP433 - Warning: The reference operation set is already in use.

CP433 - Overview

• Message type: E = Error

• Message class: CP - Task list messages: Core data

• Message number: 433

• Message text: Warning: The reference operation set is already in use.

What causes this issue?

You are attempting to change a reference operation set that is
referenced in other task lists. These task lists will also be changed
if you make changes to this reference operation set.

How to fix this error?

Check what effect changes to the reference operation set will have on
the referenced task lists. Use the where-used report for task lists.
In routings, select the menu options <LS>Reporting -> Where-used ->
Ref. operation sets</>.
<DS:TRAN.CA90>Execute where-used list</>

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CP433 - Warning: The reference operation set is already in use. ?

  The SAP error message CP433, which states "Warning: The reference operation set is already in use," typically occurs in the context of production planning and control, particularly when dealing with routing and operation sets in SAP's PP (Production Planning) module.
  
  Cause:
  This warning indicates that the reference operation set you are trying to use is already assigned to another production order or routing. In SAP, a reference operation set is a collection of operations that can be reused across different production processes. When you attempt to assign a reference operation set that is already in use, SAP generates this warning to inform you that the operation set is not available for the new assignment.
  
  Solution:
  
  
  Check Usage: First, check where the reference operation set is currently being used. You can do this by navigating to the relevant transaction codes (like CA03 for displaying routing) and checking the assignments.
  
  
  Modify or Create a New Set: If