> ## Documentation Index
> Fetch the complete documentation index at: https://docs.zennopay.in/llms.txt
> Use this file to discover all available pages before exploring further.

# Corridors

> Which networks Zennopay supports and how each one works.

A *corridor* is a (origin, destination, rail) triple. v1 covers two
destination corridors; origin is always a USD wallet held by the partner.

## TH — PromptPay

* **Corridor code:** `th_promptpay`
* **Local rail:** PromptPay (Bank of Thailand's instant payment network)
* **Settlement currency to merchant:** THB
* **Refund window:** T+7 (payout-partner-side)
* **Pass-through provider fee:** 1.0% of the USD amount

PromptPay QR codes are issued by Thai banks to merchants of every size, from
airport duty-free counters to street stalls. Zennopay routes the transaction
through its licensed payout partner network for the corridor; the partner
network handles USD → THB FX and the final push to the merchant's
PromptPay-registered account.

## VN — VietQR

* **Corridor code:** `vn_vietqr`
* **Local rail:** VietQR (interbank QR standard governed by NAPAS)
* **Settlement currency to merchant:** VND
* **Refund window:** T+1 (payout-partner-side)
* **Pass-through provider fee:** 0.66% of the USD amount

VietQR is the unified QR standard across Vietnamese banks. Zennopay's payout
partner for this corridor handles USD → VND conversion and merchant
settlement.

## Choosing a corridor

The corridor is locked when the payment intent is created and is embedded in
the session JWT. Your app picks the corridor based on which country the user
is paying in (typically inferred from the QR code itself; partner UX picks
the corridor *before* the user scans).

## Roadmap

| Corridor       | Status    |
| -------------- | --------- |
| TH PromptPay   | Live (v1) |
| VN VietQR      | Live (v1) |
| ID QRIS        | Planned   |
| PH InstaPay QR | Planned   |
| MY DuitNow QR  | Planned   |