This guide provides information on using Shopify test certificates to test a credit card payments apps extension.

> Note:
> You should only use this test certificate for non-production credit card payments apps extensions.

## Requirements

- You've [created a credit card payments app extension](/docs/apps/build/payments/credit-card/use-the-cli).
- You're a [Partner organization owner](https://help.shopify.com/partners/dashboard/account-access).


## Using the test certificate

To use Shopify's test certificate, set the value of the `encryption_certificate_fingerprint` field to `Test Certificate` in your [credit card payment extension](/docs/apps/build/payments/credit-card/use-the-cli?framework=remix#create-a-payments-extension) then, [deploy and release the extension](/docs/apps/build/payments/credit-card/use-the-cli?framework=remix#deploy-and-release-your-extension).

```
encryption_certificate_fingerprint = "Test Certificate"
```
With the test certificate configured, Shopify will always send the same static [test payload data](/docs/apps/build/payments/credit-card/test-certificate#test-payload) in the `payment_method` hash for every payment session request.

## Test private key
The private key which is used to decrypt the encrypted payload.

```
-----BEGIN EC PRIVATE KEY-----
MHcCAQEEIPdk1Yrjq9UNZBPRFfY2/JFiNXVWbKNwkhqADTm46XUyoAoGCCqGSM49
AwEHoUQDQgAEPwwyTcNvVwInu9COj3WZooI+Aj1/KRolD6u7XmjpuBXlHq2nopJh
qkKwdrnUzWjkiJuY1qrUucT2mH+VkUGBSA==
-----END EC PRIVATE KEY-----
```

## Test certificate
The test certificate which is used to encrypt the test payload.
```
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
```

## Test payload
This section details the payloads you'll receive, which depends on the API version of your payments app extension.

<p>
<div class="react-stacked-code-block ThemeMode-dim" data-preset="stacked">
<script data-option="title" data-value="Encrypted message contents"></script>



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</div>

</div>
</div>


<script type="text/plain" data-language="json" data-title="API version 2024-07 and later">
d2Zlzlt2ePtL8wB0AeiAdEfD2L+vt8evkaVki7Y9qMHVN8EAbNQjTdLvZoAjUd9Mbo2Zt0BnJaHleKZUF7aGIvQ+LIAiuJFt2GNKtBbmArA9FLoEu5ltteKRtNyXeJiUqjP6LOK3XT6rhSGlhA6nAhXqi7r5RE2z55cZtRqaE1WdQ/E66XHYv+DRv6cMVwES1A==
</script>
<script type="text/plain" data-language="json" data-title="API version 2023-07">
mz3MA17RMq/OpuppvzBrd8C47DgH4LBHbyT9E+o9Z3/IxUP1UhC+PAd/UW+PjfiA+IXeqyoxFuuynW9Sntr1iiA4qjXJlsTUmZepIJoXhfAW5ZgjemViB1+Cs6roKAonREupFh6xznPyFilYZ6v3sSHIeArD8MHp2+WJb2Rj
</script>
<script type="text/plain" data-language="json" data-title="API version 2023-04 and earlier">
XQ3BAPK0UieJOObj05TCU/HvBmDhesiHbV/VCG43F2xWEmQRTPPDNiP8fBpGHNlobybZQpUt8fTnVhP151aAxKzjFWHAW2Oz2DEtVc0N3YG3Af7mwsXtQXXUY/nddldoVf2V4t18SAiJuof8TrgO76T1wydb
</script>

</div>
</p>



</div>
</p>


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<script data-option="title" data-value="Decrypted message contents"></script>



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<script type="text/plain" data-language="json" data-title="API version 2024-07 and later">
{
    "type": "card",
    "data": {
        "full_name": "Percy Parker",
        "pan": "4242424242424242",
        "month": 12,
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        "verification_value": "123",
        "network": "visa"
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}
</script>
<script type="text/plain" data-language="json" data-title="API version 2023-07">
{
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    "data": {
        "full_name": "Percy Parker",
        "pan": "4242424242424242",
        "month": 12,
        "year": 2050,
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}
</script>
<script type="text/plain" data-language="json" data-title="API version 2023-04 and earlier">
{
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    "full_name": "Percy Parker",
    "pan": "0123456789012345",
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</script>

</div>
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