Create ISV Payment Order (Smart Checkout)
Order details
Amount (THB)
Backend converts to minor units (×100) before calling Viva.
Tip (THB)
Optional tip. You’ll add it to amount server-side.
ISV amount (THB)
Your internal ISV share (not shown by Viva UI).
Merchant reference (merchantTrns)
Your internal reference (table, bill, order number, etc.).
ISV / Connected merchant
Connected Merchant ID (merchantId)
Target merchant (connected account) that should receive this payment.
Source Code
Use the Smart Checkout source from the merchant’s Viva account.
Create ISV Payment Order