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 invoice creation.
  
  Solution:
  
  Check the Goods Receipt: Verify the quantity that was received against the quantity being invoiced. Ensure that the GR quantity is correct and matches what was actually received.
  Adjust the Invoice Quantity: If you intend to invoice a smaller quantity, you may need to adjust the GR quantity or create a new invoice for the correct amount. This may involve:
  
  Creating a new invoice for the remaining quantity.
  Adjusting the GR if it was incorrectly recorded (this may require reversing the GR).
  
  
  Review Purchase Order Settings: Check the settings in the purchase order to see if there are any restrictions on partial invoicing. If necessary, adjust the settings to allow for partial invoices.
  Consult with Your SAP Administrator: If you are unsure about how to proceed or if the issue persists, consult with your SAP administrator or support team for further assistance.
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes such as MIR7 (Invoice Verification) or MB03 (Display Material Document) to review the relevant documents.
  Documentation: Refer to SAP documentation or help files for more detailed information on invoice verification and handling discrepancies.
  User Exits and Enhancements: In some cases, custom user exits or enhancements may be implemented that affect how quantities are handled during invoice verification. Check if any custom logic is in place.
  
  By following these steps, you should be able to resolve the M8194 error and successfully process your invoice.