How To Fix CP426 - Ref. operation set & & has no operations

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 426

• Message text: Ref. operation set & & has no operations

What causes this issue?

You are attempting to include a reference operation set with no
operations.

How to fix this error?

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

Make sure you really want to reference a task list without operations
<ZH>or</>
Maintain operations in the reference operation set in question.
<DS:TRAN.CA12>Maintain operations</>

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CP426 - Ref. operation set & & has no operations ?

  The SAP error message CP426 indicates that a reference operation set (ROS) does not contain any operations. This can occur in the context of production planning and control, particularly when working with routing and operations in SAP.
  Cause:
  
  Empty Reference Operation Set: The reference operation set you are trying to use has not been defined with any operations. This can happen if the set was created but no operations were added to it.
  Incorrect Assignment: The reference operation set may be incorrectly assigned to a routing or production order, leading to the system not finding any operations to execute.
  Data Deletion: Operations may have been deleted from the reference operation set, either intentionally or accidentally.
  
  Solution:
  
  
  Check the Reference Operation Set:
  
  Go to the transaction code CR03 (Display Reference Operation Set) and enter the reference operation set number.
  Verify if there are any operations defined in the set. If it is empty, you will need to add the necessary operations.
  
  
  
  Add Operations:
  
  If the reference operation set is empty, you can create or modify it using transaction code CR01 (Create Reference Operation Set) or CR02 (Change Reference Operation Set).
  Add the required operations to the reference operation set.
  
  
  
  Review Routing Assignments:
  
  Check the routing or production order that is using the reference operation set to ensure it is correctly assigned.
  Use transaction code CA03 (Display Routing) to review the routing details.
  
  
  
  Consult Documentation:
  
  If you are unsure about the operations that should be included in the reference operation set, consult your organization's documentation or speak with a production planner or SAP consultant.
  
  
  
  Related Information:
  
  Transaction Codes:
  
  CR01: Create Reference Operation Set
  CR02: Change Reference Operation Set
  CR03: Display Reference Operation Set
  CA03: Display Routing
  
  
  SAP Help Documentation: Refer to the SAP Help Portal for detailed information on reference operation sets and their usage in production planning.
  User Exits and BAdIs: If you are customizing the behavior of reference operation sets, check for any user exits or BAdIs that might affect how operations are assigned or displayed.
  
  By following these steps, you should be able to resolve the CP426 error and ensure that your reference operation set is correctly configured with the necessary operations.