hostw3

We sometimes send invoices through QuickBooks for large projects that have many line items. Is it possible to create a product in which the customer can enter the amount to be paid in a 'Custom Field'? This way customer can go through the checkout process and enter their invoice number and amount paid. Then it would apply a 'credit' to their account that was created in WHMCS. This is just for some customers who may want to pay via credit card when we mail them the invoice. We do not want to create an account and invoice for every customer we send invoices to this way.

I'm working on a custom form and wanted to see if custom fields (customer and product) can be entered from a form?