---
title: "Replaces every updatable field of a client contact (BF-7503)."
method: PUT
path: "/v{version}/Clients/{clientId}/contacts/{contactId}"
tags: ["Clients"]
---

# Replaces every updatable field of a client contact (BF-7503).

`PUT /v{version}/Clients/{clientId}/contacts/{contactId}`

Fields: firstName, lastName, emailAddress (required), title, phone, phoneExt. Names are those of GET
/v1/Clients/contact/{clientId}/{contactId}. isActive, middleName and other keys are ignored and
never written; the contact's login, registration and active state are left alone. A new
emailAddress changes the contact's login name and must not be used by another user of the company.
A contact who is a contact of several clients has one profile: the change shows on every client.
Format rules apply only to values that change. clientId and contactId in the body must equal the
route.

## Path parameters

- `clientId` integer, required
- `contactId` integer, required
- `version` string, required

## Headers

- `company-id` string, required

## Request body

- ClientsContractsCommandsUpdatesPutClientContactCommand
  - `clientId` integer
  - `contactId` integer
  - `firstName` string, nullable
  - `lastName` string, nullable
  - `title` string, nullable
  - `phone` string, nullable
  - `phoneExt` string, nullable
  - `emailAddress` string, nullable

## Response `200`

Success

- ClientsContractsCommandsUpdateClientContactResponse
  - `isValid` boolean
  - `errors` string[], nullable
  - `warnings` string[], nullable
  - `info` string[], nullable
  - `message` string, nullable
  - `data` ClientsContractsCommandsUpdatedClientContactResponse
    - `contactId` integer

## Changes

- **2026-09-24** `b6c431404f24` — 1 info
  - endpoint added

[Change history](https://skmtc.dev/bilflo/apis/bilflo-api/changes/v:version/Clients/:clientId/contacts/:contactId/put.md)

---

[API](https://skmtc.dev/bilflo/apis/bilflo-api.md) · [All operations](https://skmtc.dev/bilflo/apis/bilflo-api/llms.txt) · [OpenAPI document](https://skmtc.dev/bilflo/apis/bilflo-api/revisions/5063eab95b17?raw)