Message type: E = Error
Message class:  /SAPAPO/FOT -  
Message number: 802
Message text: Check receipt quantity of child order
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.
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.
The SAP error message /SAPAPO/FOT802 Check receipt quantity of child order typically occurs in the context of Advanced Planning and Optimization (APO) when there is a discrepancy between the expected and actual receipt quantities for a child order in a production or planning scenario. This error can arise during various processes, such as order confirmation, production planning, or when executing a heuristic.
Cause: Mismatch in Quantities: The receipt quantity of the child order does not match the expected quantity defined in the parent order or the planning scenario. Order Confirmation Issues: If the child order has been confirmed with a quantity that is different from what was planned or expected, this error may occur. Data Inconsistencies: There may be inconsistencies in the master data or transaction data related to the orders, such as incorrect settings in the production version or BOM (Bill of Materials). Planning Parameters: Incorrect planning parameters or settings in the APO system
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
/SAPAPO/FOT801 Enter a receipt quantity for the child Order
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
/SAPAPO/FOT800 ********** User Interface MESSAGES  ********** (not used anywhere)
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
/SAPAPO/FOT803 No production version exists for product &2
What causes this issue?  No valid production version could be found for the given material .System Response  The system issues an error message and wi...
/SAPAPO/FOT804 No order number specified: Internal number range will be used.
What causes this issue?  You have not specified an order number for the child / resulting order.System Response  The system will use APO internal numb...
Click on this link to search all SAP messages.