---
title: "Link TMS user to Mentium user"
method: POST
path: "/v2/tms/integration-connections/{integration_connection_id}/user-mappings"
tags: ["v2", "tms", "tms-user-mappings"]
---

# Link TMS user to Mentium user

`POST /v2/tms/integration-connections/{integration_connection_id}/user-mappings`

## Request

- Base URL: `https://api.mentium.io` (the document declares no server; this is the origin it was published from)
- URL: `https://api.mentium.io/v2/tms/integration-connections/{integration_connection_id}/user-mappings`
- Auth: HTTP bearer

Create or update a mapping from a TMS user ID (e.g. sales_rep_user_id) to a Mentium user. This is the first time an entry goes into tms_user_mentium_mapping. Subsequent get-load-details / TMS API responses will then return the Mentium user for that rep.

## Path parameters

- `integration_connection_id` string, uuid, required

## Headers

- `mentium-workspace-id` string, nullable

## Request body

- TmsUserMentiumMappingCreate: Body for linking a TMS user to a Mentium user.
  - `tms_user_id` string, required: TMS user identifier (e.g. from team_assignments)
  - `user_id` string, required: Mentium user UUID to link (must be in same organization)

## Response `201`

Successful Response

- TmsUserMentiumMappingResponse: Response after creating or updating a mapping.
  - `id` string, required
  - `organization_id` string, required
  - `integration_connection_id` string, required
  - `tms_user_id` string, required
  - `user_id` string, required

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/mentium/apis/mentium-api.md) - [All operations](https://skmtc.dev/mentium/apis/mentium-api/llms.txt) - [OpenAPI document](https://skmtc.dev/mentium/apis/mentium-api/revisions/b4ed8e59432e?raw)