How To Fix MILL_OC031 - The final operation is before the initial operation

SAP Error Message - Details

• Message type: E = Error

• Message class: MILL_OC - Messages for order combination

• Message number: 031

• Message text: The final operation is before the initial operation

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message MILL_OC031 - The final operation is before the initial operation ?

  The SAP error message MILL_OC031 ("The final operation is before the initial operation") typically occurs in the context of production planning and scheduling, particularly when dealing with operations in a routing or production order. This error indicates that there is a logical inconsistency in the sequence of operations defined for a production process.
  Cause:
  The error arises when the system detects that the final operation in a routing or production order is scheduled to occur before the initial operation. This can happen due to several reasons, including:
  
  
  Incorrect Routing Definition: The sequence of operations in the routing may have been defined incorrectly, leading to a situation where the end operation is scheduled before the start operation.
  
  
  Scheduling Issues: If the scheduling parameters or settings are not configured correctly, it may lead to operations being scheduled in an incorrect order.
  
  
  Changes in Operations: If operations were added, removed, or modified after the initial scheduling, it could lead to inconsistencies in the operation sequence.
  
  
  Data Entry Errors: Manual entry errors while defining or modifying the routing or production order can also lead to this issue.
  
  
  Solution:
  To resolve the MILL_OC031 error, you can take the following steps:
  
  
  Check Routing Sequence:
  
  Go to the routing associated with the production order and verify the sequence of operations. Ensure that the initial operation is correctly defined before the final operation.
  
  
  
  Review Production Order:
  
  Check the production order for any discrepancies in the operation sequence. Make sure that the operations are listed in the correct order.
  
  
  
  Adjust Scheduling Parameters:
  
  Review the scheduling parameters in the production order. Ensure that the start and finish dates/times for operations are logically consistent.
  
  
  
  Recreate or Modify Operations:
  
  If necessary, recreate the operations in the correct order or modify the existing operations to ensure that the final operation follows the initial operation.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for specific guidance on routing and production order management.
  
  
  
  Test Changes:
  
  After making adjustments, test the changes by attempting to schedule the production order again to ensure that the error is resolved.
  
  
  
  Related Information:
  
  Transaction Codes: You may use transaction codes like CA03 (Display Routing) or CO02 (Change Production Order) to view and modify routings and production orders.
  SAP Notes: Check for any relevant SAP Notes that may address known issues or provide additional guidance on this error.
  User Roles: Ensure that you have the necessary permissions to make changes to routings and production orders in the SAP system.
  
  If the issue persists after following these steps, it may be beneficial to consult with your SAP support team or a functional consultant who specializes in production planning and scheduling.