3725434 - PO Amount Variance exception triggered even when the invoice total does not exceeds available amount.

I receive a PO Amount Variance exception with the message:

The amount on the invoice, [Field Path Target], exceeds the available amount for invoicing on the purchase order, [Field Path Source On Dispute].

even though the invoice total is within the remaining available amount of the PO.

SAP Ariba Buying & Invoicing

IR, reconciliation, tax , KBA , BNS-ARI-INV-IR-EXP , Invoice Reconciliation Exceptions , Problem