How To Fix /SAPAPO/FOT811 - Negative quantity is not allowed

/SAPAPO/FOT811 - Overview

• Message type: E = Error

• Message class: /SAPAPO/FOT -

• Message number: 811

• Message text: Negative quantity is not allowed

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/FOT811 - Details

• The SAP error message /SAPAPO/FOT811 Negative quantity is not allowed typically occurs in the context of SAP Advanced Planning and Optimization (APO) when a negative quantity is being processed in a transaction where only positive quantities are valid. This can happen in various scenarios, such as during the creation of planned orders, purchase orders, or when dealing with stock levels.
  Causes:
  
  Incorrect Data Entry: A user may have inadvertently entered a negative quantity in a field that only accepts positive values.
  Master Data Issues: There may be inconsistencies or errors in the master data, such as product master or location data, that lead to negative quantities being calculated.
  Planning Parameters: The planning parameters or settings may not be configured correctly, leading to negative quantities in the planning run.
  Stock Levels: If the system is trying to allocate or plan for stock that is not available or is incorrectly set up, it may result in negative