---
title: "Update a site access hours"
method: PUT
path: "/v1/contacts/{contactId}/accessHours"
tags: ["Contacts"]
---

# Update a site access hours

`PUT /v1/contacts/{contactId}/accessHours`

## Request

- Base URL: `https://api.bigchange.com`
- URL: `https://api.bigchange.com/v1/contacts/{contactId}/accessHours`
- Auth: HTTP bearer

Update the details of access hours for a contact (required scope contacts:write)

## Path parameters

- `contactId` integer, required

## Headers

- `Customer-Id` integer, required

## Request body

- UpdateAccessHourModel[]
  - `dayOfWeek` 'sunday' | 'monday' | 'tuesday' | 'wednesday' | 'thursday' | 'friday' | 'saturday': <p>Possible values:</p><ul><li><b>sunday</b></li><li><b>monday</b></li><li><b>tuesday</b></li><li><b>wednesday</b></li><li><b>thursday</b></li><li><b>friday</b></li><li><b>saturday</b></li></ul>
  - `start` string, time, required: The 24H format time of day that access to the contact site starts (hh:mm)
  - `stop` string, time, required: The 24H format time of day that access to the contact site stops (hh:mm)

## Response `204`

No Content

## Other responses

- `400`: Bad Request
- `403`: Forbidden
- `404`: Not Found
- `422`: Unprocessable Content
- `500`: Internal Server Error

## Changes

- **2026-10-29** `5306509f5616`: 1 breaking, 7 info
  - the response's body type changed from no type to `object` for status `422`
  - removed `#/components/schemas/ProblemDetails, #/components/schemas/HttpValidationProblemDetails` from the response body `oneOf` list for the response status `422`
  - added the optional property `detail` to the response with the `422` status
  - added the optional property `errors` to the response with the `422` status
  - …4 more

[Operation history](https://skmtc.dev/bigchange/apis/bigchange-dx/changes/v1/contacts/:contactId/accessHours/put.md)

---

[API](https://skmtc.dev/bigchange/apis/bigchange-dx.md) - [All operations](https://skmtc.dev/bigchange/apis/bigchange-dx/llms.txt) - [OpenAPI document](https://skmtc.dev/bigchange/apis/bigchange-dx/revisions/b262bfdb1dd0?raw)