---
title: "Login User"
method: POST
path: "/login"
tags: ["Users"]
---

# Login User

`POST /login`

Authenticate a user and return a user token

## Request body

- LoginUserRequestDTO
  - `accountName` string, required — Name of the merchant account
  - `usernameOrEmail` string, required — Username or email address of the user
  - `password` string, required — User password

## Response `200`

OK

- UserLoggedInDTO
  - `sessionKey` string, required — Session key for the user, used as a bearer token for authenticating subsequent API requests

## Other responses

- `400` — The request was rejected. `type` is `invalid_request_error` when the request itself is at fault — `errors` then lists every problem found, with field-attributable entries prefixed by the field’s path; `invalid_state_error` when the request was well-formed but the resource is not in a state that allows it; or `payment_error` when the payment was refused by the issuer or processor.
- `409` — `type` is `conflict_error`. The supplied `X-Idempotency-Key` was already used with a different request body (`code` is `idempotency_conflict`, and retrying will not help), or the resource is being modified by another in-flight request (`code` is `resource_locked`, and retrying with backoff will).
- `429` — Too many requests. The rate limit is applied per client across all operations. `type` is `rate_limit_error`.
- `500` — The request could not be completed because of an unexpected error. `type` is `api_error`.
- `504` — The request exceeded the processing time limit and was abandoned. `type` is `api_error` and `code` is `timeout` — unlike a plain 500 the request may still have taken effect, so retry with the same idempotency key rather than blindly.

---

[API](https://skmtc.dev/odus/apis/odus-orchestration-api.md) · [All operations](https://skmtc.dev/odus/apis/odus-orchestration-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/odus/odus-orchestration-api/revisions/d5fdcba31576/schema)