Yes it would be very helpful if the voucher code, when used to book & pay the deposit online, then showed up somewhere on the client card, appointment or at least under the payment on sales. At present you are able to only see this by having to view the clients emailed receipt. Meaning you sometimes have to ask the client for the voucher code again to pay off any remaining balance.

This is essential as there may only be a small balance left on the gift card way under the deposit amount needed to secure the booking.