How To Fix MILL_PC171 - Cancel confirmations before removing assignment to &1

SAP Error Message - Details

• Message type: E = Error

• Message class: MILL_PC - Mill: Message Pool for Confirmations

• Message number: 171

• Message text: Cancel confirmations before removing assignment to &1

copied from HM6

What causes this issue?

You cannot remove the asignment of process batch &V1& to the original
order, as you have already saved the assignment.
If you assign process batches to an original order in the last combined
order operation that requires confirmation, the system transfers the
process batches and confirmed quantities to the assigned original
orders.

System Response

The assignment between the process batch and original order cannot be
deleted.

How to fix this error?

Reverse all confirmation for the last operation that requires
confirmation in the combined order.

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 MILL_PC171 - Cancel confirmations before removing assignment to &1 ?

  The SAP error message MILL_PC171 ("Cancel confirmations before removing assignment to &1") typically occurs in the context of production planning and control, particularly when dealing with confirmations in the production process. This error indicates that there are existing confirmations for a production order or process order that need to be canceled before you can remove the assignment of a component or resource.
  Cause:
  The error arises when you attempt to remove an assignment (such as a component or resource) from a production order or process order that has already been confirmed. The system requires that all confirmations related to that order be canceled first to maintain data integrity and ensure that the production process is accurately reflected in the system.
  Solution:
  To resolve this error, follow these steps:
  
  
  Identify Confirmations: Check for any existing confirmations related to the order in question. You can do this by navigating to the relevant transaction (e.g., CO15 for order confirmations) and reviewing the confirmations for the specific order.
  
  
  Cancel Confirmations: If there are confirmations present, you will need to cancel them. This can typically be done using the transaction code CO15 (for production orders) or COHV (for mass processing of confirmations). Select the confirmations you wish to cancel and execute the cancellation.
  
  
  Remove Assignment: Once all confirmations have been successfully canceled, you can proceed to remove the assignment to the component or resource.
  
  
  Check for Dependencies: Ensure that there are no other dependencies or processes that might be affected by the removal of the assignment. This may include checking for open reservations or stock movements.
  
  
  Reconfirm if Necessary: After making the changes, if needed, you can re-confirm the order or process with the updated assignments.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CO15 (Confirmations), COHV (Mass Processing of Confirmations), and CO02 (Change Production Order).
  Documentation: Review SAP documentation or help files related to production order confirmations and component assignments for more detailed guidance.
  User Roles: Ensure that you have the necessary authorizations to cancel confirmations and modify production orders.
  System Logs: Check system logs for any additional error messages or warnings that may provide further context to the issue.
  
  If the problem persists after following these steps, it may be beneficial to consult with your SAP support team or refer to SAP Notes for any known issues or patches related to this error message.