How To Fix WS819 - Negative values are not allowed in the document at item level

SAP Error Message - Details

• Message type: E = Error

• Message class: WS - Supplier Billing Document

• Message number: 819

• Message text: Negative values are not allowed in the document at item level

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message WS819 - Negative values are not allowed in the document at item level ?

  Certainly! Here's a detailed explanation regarding the SAP error message WS819: Negative values are not allowed in the document at item level:
  
  Error Message: WS819 - Negative values are not allowed in the document at item level
  
  
  Cause:
  This error occurs when you try to post or process a document in SAP that contains negative values at the item level, but the system or the specific business transaction does not allow negative amounts for those items.
  Common scenarios include:
  
  Posting a goods movement or invoice where the quantity or amount is negative, but the transaction type or configuration prohibits negative values.
  Certain document types or item categories are configured to only accept positive values.
  The business logic or validation rules in the system enforce that item-level values must be positive (e.g., in sales orders, billing documents, or material documents).
  Custom validations or user-exits/enhancements that restrict negative values.
  
  
  Where it typically occurs:
  
  Material documents (goods movements)
  Financial documents (invoices, credit memos)
  Sales and