Why is my invoice failing with the error: The total net amount invoiced exceeds limit

The transaction rule Allow net amounts to exceed subtotals is enabled, so when suppliers add taxes, the Total Net Amount can exceed the Subtotal on the Purchase Order.

Solution 1: Create a new PO or change order with increased PO amount.

Solution 2:
Enable the Default Transaction Rule Allow net amounts to exceed subtotals. For more information, please contact your buyer.

SAP Business Network for Procurement & Supply Chain > Transaction Documents > Transaction (Invoicing)