How To Fix KO408 - Either enter a reference order or an external order

SAP Error Message - Details

• Message type: E = Error

• Message class: KO - Master data for CO orders

• Message number: 408

• Message text: Either enter a reference order or an external order

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message KO408 - Either enter a reference order or an external order ?

  The SAP error message KO408 ("Either enter a reference order or an external order") typically occurs in the context of order management, particularly when dealing with production orders, maintenance orders, or similar transactional processes. This error indicates that the system requires either a reference order or an external order number to proceed with the transaction.
  Cause:
  
  Missing Reference Order: The system expects a reference order to be specified, but none has been provided.
  Missing External Order: Alternatively, if the process requires an external order number, and it is not provided, this error will also be triggered.
  Configuration Issues: There may be configuration settings in the order management module that require certain fields to be filled out, which are currently left blank.
  User Input Error: The user may have overlooked entering the required information in the relevant fields.
  
  Solution:
  
  Enter a Reference Order: If the process requires a reference order, ensure that you enter a valid reference order number in the appropriate field.
  Enter an External Order: If the process requires an external order, make sure to input a valid external order number.
  Check Configuration: Review the configuration settings in the SAP system to ensure that the fields for reference and external orders are set up correctly. This may involve consulting with your SAP administrator or functional consultant.
  Review Documentation: Check the relevant SAP documentation or user manuals for the specific transaction you are working with to understand the requirements for entering orders.
  Consult with IT Support: If you are unable to resolve the issue, consider reaching out to your IT support team or SAP helpdesk for further assistance.
  
  Related Information:
  
  Transaction Codes: The error may occur in various transaction codes related to order processing, such as CO01 (Create Production Order), CO02 (Change Production Order), or IW31 (Create Maintenance Order).
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional context.
  User Training: Ensure that users are trained on the importance of entering reference and external orders correctly to avoid this error in the future.
  
  By following these steps, you should be able to resolve the KO408 error and proceed with your order processing in SAP.