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

# Going live

## Overview

When you are ready to move from the sandbox environment to production, make sure you use the correct [base URL](/v2/docs/how_to_start#where-is-the-api) and the correct [authentication token](/v2/docs/how_to_start#how-to-authenticate-calls-to-the-merchant-api).
These are the only parameters that differ between sandbox and production.

<Tip>We recommend storing those parameters in your environment-specific configuration.</Tip>

If you use IP whitelisting, ensure that [our IP addresses are whitelisted](/v2/docs/what_to_know#ips-to-whitelist) so we can deliver callbacks to you.

## Go-live testing

We recommend implementing a feature flag for your integration with PawaPay to enable go-live testing in production, before market launch.
This allows you to test the end-to-end flow in production to uncover any environment-specific problems before they impact customers.

To test live payments, you will need the following for each MMO that you use:

* A phone and phone number with the specific MMO.
* An active mobile money wallet on that phone number.
* An available balance on the mobile money wallet to conduct the tests with.
* Be ready to enter the PIN code on the phone approximately 1-20 seconds from initiating the payment through our API.