How To Fix /SAPAPO/OM_ERROR477 - Order changed or deleted in parallel

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/OM_ERROR -

• Message number: 477

• Message text: Order changed or deleted in parallel

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 /SAPAPO/OM_ERROR477 - Order changed or deleted in parallel ?

  The SAP error message /SAPAPO/OM_ERROR477 indicates that an order has been changed or deleted in parallel while you are trying to perform an operation on it. This typically occurs in the context of SAP Advanced Planning and Optimization (APO) when multiple users or processes are trying to modify the same order simultaneously.
  Cause:
  
  Concurrent Modifications: The most common cause of this error is that another user or process has modified or deleted the order you are trying to work with while your session is still active.
  System Performance Issues: If the system is slow or there are network issues, it may lead to delays in processing, causing conflicts.
  Locking Mechanisms: SAP uses locking mechanisms to prevent data inconsistencies. If an order is locked by another transaction, you may encounter this error.
  
  Solution:
  
  Refresh the Data: Try refreshing the screen or reloading the data to see if the order is still available or if it has been updated.
  Check for Changes: Verify if another user has made changes to the order. You can check the change logs or ask your colleagues if they were working on the same order.
  Retry the Operation: After refreshing, attempt the operation again. If the order is still valid, it should process without issues.
  Use Transaction Codes: If you are using a specific transaction code, ensure that you are using the correct one for the operation you intend to perform.
  Consult with IT Support: If the issue persists, it may be necessary to consult with your IT support team or SAP Basis team to investigate any underlying system issues or to check for any locks on the order.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error. SAP frequently updates its knowledge base with solutions for common errors.
  Transaction Logs: Review transaction logs to identify any recent changes made to the order.
  User Locking: Understand how user locking works in SAP and ensure that your team is aware of best practices to avoid concurrent modifications.
  Training: Consider training sessions for users to minimize the chances of simultaneous modifications on the same orders.
  
  By following these steps, you should be able to resolve the error and understand the context in which it occurs.