Step 1: Fill up the required details.
Step 2: The buyer is redirected to Krungsri e-Payment after choosing a payment method, which is direct debit payment or credit card payment.
Step 3: The Merchant sends a payment request via Krungsri e-Payment to
the BAY system.
Step 4: The BAY system processes the online authorization and returns the
response via Krungsri e-Payment.
Step 5: The Transaction response automatically forwards to the confirmation page and customer can print out the confirmation message upon bank approval.