> For the complete documentation index, see [llms.txt](https://docs.payments.thalescloud.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.payments.thalescloud.io/pin-management/integrate-the-d1-api/d1-api-summary.md).

# D1 API summary

## Overview

This page provides a checklist of the D1 API endpoints typically required to integrate PIN Management.

{% hint style="info" %}
**Direction** indicates who calls the endpoint:

* **Inbound**: your issuer backend calls the D1 API.
* **Outbound**: the D1 backend calls your issuer backend.
  {% endhint %}

### Required APIs <a href="#required-apis" id="required-apis"></a>

| API                                                                                                                                                                                                                                                                              | Inbound/Outbound    | Description                                           |
| -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------- | ----------------------------------------------------- |
| [​Get authorization token​](/pin-management/integrate-the-d1-api/d1-api-reference/inbound-api-to-d1/oauth2-api.md#post-oauth2-token)                                                                                                                                             | Issuer -> Thales D1 | Get an OAuth 2.0 access token to call the D1 backend. |
| [​Create card](/pin-management/integrate-the-d1-api/d1-api-reference/inbound-api-to-d1/card-api.md#post-v2-issuers-issuerid-cards) or [Register card​](/pin-management/integrate-the-d1-api/d1-api-reference/inbound-api-to-d1/card-api.md#put-v2-issuers-issuerid-cards-cardid) | Issuer -> Thales D1 | Create or register a card in the D1 backend.          |
| [​Renew card​](/pin-management/integrate-the-d1-api/d1-api-reference/inbound-api-to-d1/card-api.md#post-v2-issuers-issuerid-cards-cardid-operations-renew)                                                                                                                       | Issuer -> Thales D1 | Renew a card.                                         |
| [​Replace card​](/pin-management/integrate-the-d1-api/d1-api-reference/inbound-api-to-d1/card-api.md#post-v2-issuers-issuerid-cards-cardid-operations-replace)                                                                                                                   | Issuer -> Thales D1 | Replace a card.                                       |
| [​Delete card​](/pin-management/integrate-the-d1-api/d1-api-reference/inbound-api-to-d1/card-api.md#post-v2-issuers-issuerid-cards-cardid-operations-delete)                                                                                                                     | Issuer -> Thales D1 | Delete a card from the D1 backend.                    |

### Optional APIs <a href="#optional-apis" id="optional-apis"></a>

Use the APIs below depending on which flow you enable

| API                                                                                                                                                          | Inbound/Outbound    | Description                                                                |
| ------------------------------------------------------------------------------------------------------------------------------------------------------------ | ------------------- | -------------------------------------------------------------------------- |
| [Get authorization token](/pin-management/integrate-the-d1-api/d1-api-reference/outbound-api-from-d1/oauth2-api.md#post-oauth2-token)                        | Issuer <- Thales D1 | Get an OAuth 2.0 access token to call the Issuer backend.                  |
| [Get PIN](/pin-management/integrate-the-d1-api/d1-api-reference/outbound-api-from-d1/pin-management-api.md#get-cms-api-v1-issuers-issuerid-cards-cardid-pin) | Issuer <- Thales D1 | Retrieve the PIN from Issuer backend in order to display it on the mobile. |
| [Set PIN](/pin-management/integrate-the-d1-api/d1-api-reference/outbound-api-from-d1/pin-management-api.md#put-cms-api-v1-issuers-issuerid-cards-cardid-pin) | Issuer <- Thales D1 | Set the PIN from mobile app to the Issuer backend.                         |


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