How To Fix CM120 - You cannot delete the allocation to the referenced operation &.

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 120

• Message text: You cannot delete the allocation to the referenced operation &.

What causes this issue?

The operation for which you want to delete the material component
allocation belongs to a referenced operation set. Allocations to
referenced operations cannot be deleted in the routing containing the
reference.

How to fix this error?

If you want to delete the allocation, you can do this by maintaining
the referenced 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 CM120 - You cannot delete the allocation to the referenced operation &. ?

  The SAP error message CM120 ("You cannot delete the allocation to the referenced operation &.") typically occurs in the context of production planning or project management when you attempt to delete an allocation (such as a resource or cost allocation) that is still being referenced by an operation in a production order or project.
  Cause:
  
  Active Reference: The allocation you are trying to delete is still linked to an active operation. This means that the operation is either in progress or has not been fully completed.
  Status of the Operation: The operation may have a status that prevents changes, such as being released or in process.
  Dependencies: There may be dependencies or relationships with other operations or components that prevent the deletion of the allocation.
  
  Solution:
  
  Check Operation Status: Verify the status of the operation to which the allocation is linked. If the operation is still active, you may need to complete or cancel it before you can delete the allocation.
  Remove Dependencies: If there are dependencies, ensure that they are resolved. This may involve adjusting other operations or allocations that are linked to the one you are trying to delete.
  Use Transaction Codes: Use relevant transaction codes (like CO02 for changing production orders) to check the details of the operation and its allocations.
  Consult Documentation: Review SAP documentation or help files for specific instructions related to the operation and allocation management.
  Seek Authorization: Ensure you have the necessary permissions to make changes to the allocations and operations. If not, consult with your SAP administrator or relevant personnel.
  Error Logs: Check for any additional error messages or logs that may provide more context on why the deletion is not allowed.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes related to production orders (e.g., CO01, CO02, CO03) and project management (e.g., CJ20N).
  SAP Notes: Look for SAP Notes that may address specific issues related to this error message. SAP Notes often provide patches or workarounds for known issues.
  User Roles: Ensure that your user role has the necessary authorizations to perform deletions and modifications in the system.
  Testing in Sandbox: If possible, replicate the issue in a sandbox environment to test different scenarios without affecting production data.
  
  If the issue persists after following these steps, it may be beneficial to consult with your SAP support team or a technical consultant who can provide more tailored assistance based on your specific SAP configuration and business processes.