---
title: "Changes to Checkout internal"
method: POST
path: "/checkout-internal"
---

# Changes to Checkout internal

`POST /checkout-internal`

> Every recorded change to this operation, newest first.
> 230 revisions in range; 1 not diffed.

## Timeline

Changed in 8 of 230 revisions.

- **2026-09-23** `44c87d4abb2f`: 1 info
- **2026-07-13** `a9dd5197da0b`: 1 info
- **2026-07-07** `ce1e8b0b7882`: 1 warning
- **2026-07-02** `10966ca6007a`: 1 info
- **2026-06-08** `0f08bfe3219d`: 1 info
- **2026-06-05** `6aee056c2a92`: 1 breaking
- **2026-06-05** `c0d7b479cd11`: 1 warning
- **2026-05-25** `110f1d3153f9`: 1 info

## Changes

- **2026-09-23** `44c87d4abb2f`: 1 info
  - added the new optional request property `currency`
- **2026-07-13** `a9dd5197da0b`: 1 info
  - the `pay_in_advance/items/quantity` request property's min was decreased from `1.00` to `0.00`
- **2026-07-07** `ce1e8b0b7882`: 1 warning
  - the `pay_in_advance/items/quantity` request property's min was set to `1.00`
- **2026-07-02** `10966ca6007a`: 1 info
  - added the new optional request property `billing_entity_id`
- **2026-06-08** `0f08bfe3219d`: 1 info
  - added the new optional request property `opt_in_accepted`
- **2026-06-05** `6aee056c2a92`: 1 breaking
  - added the new required request property `custom_field_values`
- **2026-06-05** `c0d7b479cd11`: 1 warning
  - added the new `metronome` enum value to the `data/provider_type` response property for the response status `201`
- **2026-05-25** `110f1d3153f9`: 1 info
  - added the optional property `data/invoice_id` to the response with the `201` status

---

[Operation](https://skmtc.dev/schematichq/apis/schematic-api/docs/checkout-internal/post.md) - [API](https://skmtc.dev/schematichq/apis/schematic-api.md) - [Page](https://skmtc.dev/schematichq/apis/schematic-api/changes/checkout-internal/post)