I have added custom Checkbox under Payment section in Checkout Page for My WalletAmount. When i click the checkbox wallet amount is added in totals section and calculated with GrandTotal (Grandtotal = Grandtotal - Walletamount). After applying WalletAmount, GrandTotal is Rs.0.00. Same time when i click my checkbox, i have Customly Refreshed Payment Section. Now I am getting a message (No Payment Information Required). Then, When i Place the Order, I am getting the ErrorMessage The requested Payment Method is not available.
How to Place the Order using WalletAmount when GrandTotal is Rs.0.00 ?