Applied Net Amount Incorrect

[AngelT]

There is an invoice for a foreign supplier with Tax cod 10-Acquisition Of service (ReverseCharge).

The calculated VAT amount is correct (16%) 1,600 USD.

The withholding amount (15%) is correct 1,500 USD.

At the time of making the new transfer out of the invoice, the correct amount must be 8,500 USD (10,000 Total Gross Amount – 1,500 of ISR Withholding TaX).

And the system is calculating us an amount of 8,709.90 USD.

Is there an additional configuration so that at the time of the new outgoing Bank transfer the withholding calculation is on the amount of 10,000 USD as it is being calculated in the supplier invoice?