---
title: "Changes to Update an existing contract"
method: POST
path: "/partners/addendum"
---

# Changes to Update an existing contract

`POST /partners/addendum`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 1 of 2 revisions.

- **2026-10-07** `ac30284c1913`: 3 breaking, 3 info

## Changes

- **2026-10-07** `ac30284c1913`: 3 breaking, 3 info
  - removed the enum value `0` of the request property `is_test`
  - removed the enum value `1` of the request property `is_test`
  - the `is_test` request property type changed from `string` to `integer`
  - added the new `0.00` enum value to the request property `is_test`
  - added the new `1.00` enum value to the request property `is_test`
  - removed the non-success response with the status `404`

---

[Operation](https://skmtc.dev/booking/apis/contracting-api/docs/partners/addendum/post.md) - [API](https://skmtc.dev/booking/apis/contracting-api.md) - [Page](https://skmtc.dev/booking/apis/contracting-api/changes/partners/addendum/post)