How To Fix M8194 - Quantity invoiced is smaller than GR quantity

SAP Error Message - Details

• Message type: E = Error

• Message class: M8 - Invoice Verification/Valuation

• Message number: 194

• Message text: Quantity invoiced is smaller than GR quantity

What causes this issue?

The quantity for which you are entering an invoice is smaller than the
difference between the previously delivered and previously invoiced
quantity.
INCLUDE MM_IV_MELDUNGEN OBJECT DOKU ID TX

System Response

The system has determined that the product <ZG>(quantity to invoice -
invoice quantity) * PO price</> is larger than the quantity variance
tolerance you have set in Customizing.

How to fix this error?

Check your entries and correct them where necessary.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message M8194 - Quantity invoiced is smaller than GR quantity ?

  The SAP error message M8194 ("Quantity invoiced is smaller than GR quantity") typically occurs during the invoice verification process in the Materials Management (MM) module. This error indicates that the quantity being invoiced is less than the quantity that was received (Goods Receipt, GR) for a particular purchase order (PO). 
  
  Cause:
  
  Mismatch in Quantities: The most common cause is that the quantity being invoiced is less than the quantity that was recorded in the Goods Receipt. For example, if you received 100 units of a product but are trying to invoice only 80 units, this error will occur.
  Partial Invoicing: If the system is set up to require that the invoiced quantity must match the GR quantity, any attempt to invoice a smaller quantity will trigger this error.
  Incorrect PO or GR Data: There may be discrepancies in the purchase order or goods receipt data, such as incorrect quantities entered during GR or