How To Fix MILL_OC020 - Order & has a different plant from the reference order

SAP Error Message - Details

• Message type: E = Error

• Message class: MILL_OC - Messages for order combination

• Message number: 020

• Message text: Order & has a different plant from the reference order

What causes this issue?

During order combination, you selected one or more sales or
planned orders that do not match the plant in the reference order.

System Response

The system terminates order combination during conversion of these
orders to production orders.

How to fix this error?

Only select orders from the same plant.

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_OC020 - Order & has a different plant from the reference order ?

  The SAP error message MILL_OC020 indicates that there is a mismatch in the plant assignment between the order you are trying to process and the reference order. This typically occurs in the context of production orders, where the system expects the plant for the new order to match that of the reference order.
  Cause:
  
  Different Plants: The most common cause is that the production order you are trying to create or modify is assigned to a different plant than the reference order.
  Configuration Issues: There may be configuration settings in the system that enforce plant-specific rules for production orders.
  Data Entry Errors: Incorrect data entry when creating or copying orders can lead to this error.
  
  Solution:
  
  Check Plant Assignment: Verify the plant assignment for both the new order and the reference order. Ensure that they are the same.
  
  You can do this by checking the order details in the SAP GUI.
  
  
  Modify the Order: If the new order is incorrectly assigned to a different plant, you may need to change the plant assignment to match the reference order.
  Create a New Order: If changing the plant is not feasible, consider creating a new order that matches the plant of the reference order.
  Review Configuration: If this issue occurs frequently, review the configuration settings related to order management in your SAP system to ensure they align with your business processes.
  Consult Documentation: Refer to SAP documentation or your organization's internal guidelines for handling production orders to ensure compliance with established procedures.
  
  Related Information:
  
  Transaction Codes: You may use transaction codes like CO01 (Create Production Order) or CO02 (Change Production Order) to manage production orders.
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional context.
  User Roles and Authorizations: Ensure that the user has the necessary authorizations to create or modify orders in the specified plant.
  Training and Support: If users are frequently encountering this error, consider providing additional training or support to help them understand the importance of plant assignments in production orders.
  
  By following these steps, you should be able to resolve the MILL_OC020 error and ensure that your production orders are correctly aligned with the reference orders.