THE PROBLEM

upon entering the voucher code (as a guest customer) there is no visual indication what so ever:

• no indication that adding the code has worked.

• no indication that it did not work.

• simply nothing changes on the cart level.

in reality the code is in fact saved, because if you continue to go trough checkout, and off course enter your postal code, the voucher code does in fact get applied.

The problem so, is not that it does not work.
The problem is, that there is no confirmation of the validation of the code.

In our solution we just provided that the ANY discount on shipping is shown in as a row in the cart, dispite the fact that it might not be applicable later. (the reverse idea)

since no conditions are blocking the discount, it could in fact indeed be displayed allready, even if it can't be allready calculated. if shipping cost would be turn out Zero, or if no shipping would be selected, it is clear that a discount of nothing is also no discount.