How To Fix CM125 - New allocation to a referenced operation is not possible.

SAP Error Message - Details

• Message type: E = Error

• Message class: CM - Task list messages: Material component allocations

• Message number: 125

• Message text: New allocation to a referenced operation is not possible.

What causes this issue?

The operation to which you want to allocate the material component is
referenced from a reference operation set. You cannot allocate
material components to referenced operations.

How to fix this error?

If you want to allocate a material component to the operation, you can
do this by maintaining the reference operation set. Note, however,
that this change is valid for all routings containing a reference to
the operation set.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CM125 - New allocation to a referenced operation is not possible. ?

  The SAP error message CM125 ("New allocation to a referenced operation is not possible") typically occurs in the context of production planning and control, particularly when dealing with capacity planning and work center allocations. This error indicates that there is an issue with trying to allocate resources or operations that are already referenced or linked to another operation or process.
  Causes:
  
  Existing Allocations: The operation you are trying to allocate resources to may already have existing allocations that prevent new allocations.
  Reference Operations: The operation may be a referenced operation in another process or order, which restricts changes to its allocations.
  Status of the Operation: The operation might be in a status that does not allow for new allocations (e.g., completed, closed, or technically completed).
  Configuration Issues: There may be configuration settings in the system that restrict allocations under certain conditions.
  
  Solutions:
  
  Check Existing Allocations: Review the current allocations for the operation in question. If there are existing allocations, you may need to adjust or remove them before making new allocations.
  Review Operation Status: Ensure that the operation is in a status that allows for new allocations. If it is completed or closed, you may need to reopen it or create a new operation.
  Modify Reference Operations: If the operation is referenced in another process, you may need to modify the referencing operation or create a new operation that does not have such dependencies.
  Consult Configuration Settings: Check the configuration settings in the system related to operations and allocations. There may be specific rules or restrictions that need to be adjusted.
  Use Transaction Codes: Utilize relevant transaction codes (like CO02 for changing production orders) to navigate to the operation and check its details.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes such as CO01 (Create Production Order), CO02 (Change Production Order), and CO03 (Display Production Order) to manage operations effectively.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common problems.
  Documentation: Review SAP documentation related to production planning and control for best practices on managing operations and allocations.
  User Roles and Permissions: Ensure that you have the necessary permissions to make changes to operations and allocations in the system.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP support team or a functional consultant who specializes in production planning and control.