# Go live with real payments

Move from the development environment to production: link your real bank account, connect your real e-invoice account, test with a small real transfer, and know what to watch afterwards.

You have tried everything in **Development**: payments get paid by simulated transfers, invoices reach the provider's sandbox. Going live means setting the same things up again in **Production**, where real money moves and invoices go to the tax office. Plan an hour, with the bank account holder and whoever looks after your website at hand.

## 1. Switch to production

Click **Production** in the bar at the top of any Payments page. Ha Tang asks for confirmation, because from then on:

- payments are paid into your real bank accounts,
- e-invoices are signed and sent to the tax office, and cannot be taken back,
- notifications go to your live systems.

Click **Switch to production**. The bar turns red while you are in production. The choice is remembered on your browser; switch back with **Development** at any time.

![The confirmation shown before switching to production](https://hatang.dev/help/img/en/payments/production-confirm.webp)

> [!NOTE]
> Nothing carries over between environments. Bank accounts, matching settings, payments, transactions, invoice providers and integration keys of development stay there.

## 2. Link your real bank account

Under **Payments settings → Bank accounts**, click **Add bank account** and link your real account: MB Bank, BIDV, ACB or through Pay2S. The holder must be available to receive the bank's code or approve. See [Link your bank account](https://hatang.dev/help/payments/link-bank-account).

Then open **Matching and notifications** for that account and set again what you used in development: the payment code prefix, your own order code format, and which transfers are reported.

## 3. Connect your real e-invoice account

If you issue e-invoices, open **Payments settings → Invoice providers** and connect your real Mắt Bão account with the credentials from **Cấu hình API**. Choose the template and series registered for your business, and whether paid orders stop at the draft or are sent for signing. Send the **Callback URL** to Mắt Bão support. See [Connect your e-invoice provider](https://hatang.dev/help/payments/einvoice-providers).

## 4. Hand over to your developer

If your website creates payments or listens for notifications, your developer needs to:

- remove the development setting from the website, so it uses production,
- use the production **Secret key** from **Payments settings → Integration keys** (each environment has its own),
- make sure the notification addresses are public `https` addresses that answer quickly,
- check that the website only fulfils orders whose payment is confirmed in production.

The step-by-step version for developers is [Go live in the developer hub](https://hatang.dev/docs/guides/payments/go-live).

## 5. Test with a small real transfer

1. Create a payment in production for a small amount, for example 10,000 VND.
2. Pay it from your own banking app by scanning the QR.
3. Check that the payment becomes **Paid** within seconds (for ACB, allow up to 10 minutes) and that the transfer is listed under **Payments → Transactions** as **Matched**.
4. If the payment asked for an invoice, check that it reaches **issued** with a number.
5. Then make a second small transfer **without** the code, and check that it appears as **Unmatched**.

The money lands in your own account; there is nothing to refund through Ha Tang.

## 6. Watch it once you are live

| What to watch | Where |
|---|---|
| A bank account that stops reporting | The account's status and **last transaction** under **Payments settings → Bank accounts** |
| ACB consent running out | ACB consent lasts up to 180 days: link the account again before it ends |
| Calls to the bank or the invoice provider that are stuck or failing | **Payments → Integration health** |
| Invoices that failed or were rejected | **Payments → E-invoices**, and the alert emails sent to owners and admins |
| Money in without an invoice | **Payments → Reconciliation**, and the daily email at 8:00 |
| Transfers the bank never reported | Import the statement for the missing days |

## Launch checklist

- The real bank account is linked and **Active** in production, with its matching settings.
- The e-invoice provider is connected in production with the right template, and Mắt Bão has the callback URL.
- Your website uses production and its production keys.
- A small real transfer was paid, matched and, if needed, invoiced.
- Someone is responsible for checking failed invoices, unmatched transfers and reconciliation each week.