How To Fix /SAPAPO/FOT821 - Only 1 order is allowed in case of split or product change

/SAPAPO/FOT821 - Overview

• Message type: E = Error

• Message class: /SAPAPO/FOT -

• Message number: 821

• Message text: Only 1 order is allowed in case of split or product change

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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/SAPAPO/FOT821 - Details

• The SAP error message /SAPAPO/FOT821: Only 1 order is allowed in case of split or product change typically occurs in the context of Advanced Planning and Optimization (APO) when dealing with production orders or planned orders. This error indicates that the system has encountered a situation where it is trying to process multiple orders for a product change or split scenario, which is not allowed.
  
  Cause:
  
  Product Change or Split: The error arises when there is an attempt to create or process more than one order for a product that is undergoing a change or split. This is often related to production scheduling where a product is being switched from one variant to another or when splitting production runs.
  Configuration Settings: The system settings or configuration may restrict the number of orders that can be processed simultaneously during a product change or split.
  Order Overlap: There may be existing orders that overlap with the