Payment Video Introduction

Sequence Diagram:

Mini app payments Flow diagram

1. User Initiate Order

• The user decides to place an order in the mini app front end process for order.

2. [Merchant owned]

• Merchant mini app frontend to call their own backend to initiate the payment

Step 3: [BI-SNAP Core API] Fetch Merchant Access Token

• In order to initiate order with Super App Backend Merchant access token is needed for verification purposes. This access token can be fetched by v1.0/access-token/b2b [BI-SNAP Core API]
• The Api returns the access token which can be used for all other payment oriented APIs.
• The contract of the API can be found here

Step 4: [Merchant owned]

• Merchant mini app frontend to call their backend to initiate the payment

Step 5: [BI-SNAP Core API] Payment Host to Host

• Using Merchant Access token from step 3, Payment Creation with Super App backend can be initiated by V1.0/debit/payment-host-to-host [BI-SNAP Core API]
• The contract of the API can be found here
• The merchant payment can be Guest Checkout Payment with Payer information unknown at the point.
• The merchant guest payment should have additionalInfo.pointOfPurchaseId which is shared by GoPay upfront.

Step 6: Super App Payment creation response

• Super App Backend returns response to the merchant backend with necessary info for payments
  • webRedirectUrl -> Payment deeplink
  • ReferenceNo -> GoPay Order Id

Step 7: Merchant payment creation response

• Merchant Backend returns response to Merchant Frontend with contract owned by Merchant team.

Step 8: FE Pay

• The Mini App front end can open the Super App Payment page using the triggerPayment from step 5.
  SDK: MiniAppSDK version: 0.3.19
  Gopay App Version - 1.45.0
• Once the payment is completed, the Super App front end automatically redirects to the merchant page with payment status.

Step 9: [BI-SNAP Core API] Notify

• Once the payment is complete. Super App backend will notify the Mini App Backend by v1.0/debit/notify [BI-SNAP Core API]
• The contract for the api can be found here.

New GoPay Merchants:

If you have not integrated with GoPay or have integrated without following the BI-SNAP Core API convention, the following points apply :

• You must first onboard BI-SNAP Core API convention first using this section Onboard to BI-SNAP Core API.
• Once the BI-SNAP Core API onboarding is complete, you can follow Existing GoPay Merchant.

Existing GoPay Merchants:

If you have already integrated with GoPay and follow the BI-SNAP Core API convention, the following points apply :

• There is no change in the already integrated v1.0/access-token/b2b BI-SNAP Core API.
• For v1.0/debit/payment-host-to-host api, the new field in the existing contract needs to be added under additionalInfo.pointOfPurchaseId. The value for this is shared by the GoPay Team.
• There is no change in the already integrated v1.0/debit/notify BI-SNAP Core API.