Ability to issue receipt for each payment made against a Tax invoice Merged

We are a real estate agency.

We raise a tax invoice on the seller for marketing expenses (lets' say $1,500).

These funds need to go into our agency trust acount.

Because the funds go into a legislated trust account (regulated by law), we are legally required to issue them with a receipt in a specific format for each and every deposit.

If they pay it in one lump sum, we need to to issue them a cominat receipt for that one payments.

If they pay the tax invoiuce via instalments, we have to issue them a receipt for each and every payment.

RECKON CAN'T DO THIS basic function.

If we receive it as a Sale Receipt (so we can issue a compliant receipt to the customer), it doesn't apply the payment against the outstanding tax invoice.

If I receive it as a deposit adn apply against the tax invoice, I can't issue a compliant receipt.

If I receive it as a tax invoice to issue the receipt, then delete it so I can apply it as a payment against the outstanding tax invoice, I'm breaking the law and risk losing my real estate licence.

You MUST solve this problem

Mike