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

# Test Data

Test data is important to use in our Sandbox environment because it offers a way to use reliable forced responses.

## Phone and Personal Information

* Use any valid phone number. We do not send OTPs to this number in Sandbox
* The expected OTP is `123123`
* Personal information does not need to be real
* For Tax ID Numbers, any value in the expected format will be accepted

## Test Credit Cards

Shopper accounts will require a credit card for the first installment at checkout.

| Brand      | Number           | CVC          | Expiration      |
| ---------- | ---------------- | ------------ | --------------- |
| Visa       | 4242424242424242 | Any 3 digits | Any future date |
| Mastercard | 5555555555554444 | Any 3 digits | Any future date |
| Amex       | 371449635398431  | Any 4 digits | Any future date |
| Amex       | 378282246310005  | Any 4 digits | Any future date |
| Discover   | 6011111111111117 | Any 3 digits | Any future date |

## Test Bank Account

Merchant accounts may need a bank account in Sandbox to issue refunds. Shopper accounts may need a bank account in Sandbox to pay off outstanding loans.

USD:

* Routing number: `110000000`
* Account number: `000123456789`

CAD:

* Account Number: `000123456789`
* Institution Number: `000`
* Transit Number: `11000`

## API Keys

* Use your [sandbox API keys](https://sandbox.dashboard.sezzle.com/merchant/settings/apikeys) when testing in a test environment
* Use your [production API keys](https://dashboard.sezzle.com/merchant/settings/apikeys) when testing in a live environment