> For the complete documentation index, see [llms.txt](https://resources.atriptech.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://resources.atriptech.com/api-document/api-reference/post-booking-apis.md).

# Post-booking APIs

{% hint style="info" %}
💬 **Need help?** If you're stuck, ask Eva in the Help Center for instant diagnostics.

<a href="https://www.atriptech.com/" class="button primary" data-icon="comments">Ask Eva</a>
{% endhint %}

{% hint style="warning" %}
All API Reference endpoint examples on this site show **sandbox** base URLs.

For production traffic, use the production API base URLs shown in ATRIP under `My Profile` → `Company Information`.

Production uses **two** API base URLs:

* one for `search` traffic
* one for all other transaction APIs

Do not send live traffic to sandbox endpoints.
{% endhint %}

Use this section for endpoint-level post-booking reference.

Start here when you need:

* refund endpoint details
* void endpoint details
* ancillary, maintenance, or PNR post-booking APIs

### Main API groups

* [Refunds](/api-document/api-reference/post-booking-apis/refunds.md)
* [Void](/api-document/api-reference/post-booking-apis/void.md)
* [Post-ticketing Ancillaries](/api-document/product-guides/post-booking/post-ticketing-ancillaries.md)
* [Regenerate Order](/api-document/api-reference/post-booking-apis/regenerate-order.md)
* [Stop Ticket Issuance](/api-document/api-reference/post-booking-apis/stop-ticket-issuance.md)
* [Order List](/api-document/api-reference/post-booking-apis/order-list.md)
* [PNR Claim](/api-document/api-reference/post-booking-apis/pnr-claim.md)
* [Extract PNR](/api-document/api-reference/post-booking-apis/extract-pnr.md)