Check the invoice number used

Select this check box to check for duplicate invoice numbers in all of the customer's invoices.

Reverse on an invoice date

Select this check box to reverse a prepayment transaction for the customer as of the date of a specific invoice.

Exchange rate date

Select the method to calculate the exchange rate from the following:

• Posting date– Calculate the exchange rate based on the posting date.

• Date of VAT register– Calculate the exchange rate based on the VAT register date.

• Document date– Calculate the exchange rate based on the document date.

• Document date (for EU trade only)– Calculate the exchange rate based on the document date.

Prepayment handling

Select the Prepayment handlingtype for converting payments into prepayments and prepayments into payments from the following options:

• Simple– This option allows you to change only the prepayment creation date (of a payment) during conversion.

• Advanced– This option allows you to change the prepayment creation date and specify taxes that are different from the default prepayment taxes during conversion.