---
title: "Issue Backchannel Authentication Response"
method: POST
path: "/api/{serviceId}/backchannel/authentication/issue"
tags: ["CIBA"]
---

# Issue Backchannel Authentication Response

`POST /api/{serviceId}/backchannel/authentication/issue`

This API prepares JSON that contains an `auth_req_id`. The JSON should be used as the response body
of the response which is returned to the client from the [backchannel authentication endpoint](https://openid.net/specs/openid-client-initiated-backchannel-authentication-core-1_0.html#auth_backchannel_endpoint)

## Path parameters

- `serviceId` string, required

## Request body

- BackchannelAuthenticationIssueRequest
  - `ticket` string, required — The ticket issued from Authlete's `/backchannel/authentication` API.

## Response `200`

Backchannel authentication issued successfully

- BackchannelAuthenticationIssueResponse
  - `resultCode` string — The code which represents the result of the API call.
  - `resultMessage` string — A short message which explains the result of the API call.
  - `action` 'INTERNAL_SERVER_ERROR' | 'INVALID_TICKET' | 'OK' — The next action that the authorization server implementation should take.
  - `responseContent` string — The content that the authorization server implementation is to return to the client application. Its format varies depending on the value of `action` parameter.
  - `authReqId` string — The newly issued authentication request ID.
  - `expiresIn` integer — The duration of the issued authentication request ID in seconds.
  - `interval` integer — The minimum amount of time in seconds that the client must wait for between polling requests to the token endpoint.

## Other responses

- `400`
- `401`
- `403`
- `429` — The request exceeded the request rate permitted for the endpoint.
- `500`

---

[API](https://skmtc.net/authlete/apis/authlete-api.md) · [All operations](https://skmtc.net/authlete/apis/authlete-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/authlete/authlete-api/versions/7ad74ab64749/schema)