---
title: "Submit Back Image"
method: POST
path: "/api/v1/submit-back"
tags: ["Submit Data"]
---

# Submit Back Image

`POST /api/v1/submit-back`

Send the back of ID image base64 encoded. 2-sided documents only

## Headers

- `signature` string, required — Encrypted Request Body
- `customer-id` string, required — Your provided customer ID.

## Request body

- AppRoutesRoutesMvpV1SwaggerSwaggerDocModelsSendBackRouteRequest
  - `public_data` object, required — May **not** contain personally identifiable information (PII). A `public_data` object is required even if it is empty, for example, `public_data: {}`.
  - `private_data` object, required — May contain personally identifiable information (PII).
    - `transaction_id` string, required — ID issued at the beginning of a transaction to associate all subsequent processes within the transaction until ended.
    - `back` string, required — base64 image data of the ID back.

## Response `200`

Successfully sent the back image.

- AppRoutesRoutesMvpV1SwaggerSwaggerDocModelsSendBackRouteResponse
  - `public_data` object
    - `version` string — Version of the API.
    - `endpoint` string — The requested endpoint.
  - `private_data` object
    - `transaction_id` string — ID issued at the beginning of a transaction to associate all subsequent processes within the transaction until ended.

## Other responses

- `401` — Unauthorized

---

[API](https://skmtc.dev/intellicheck/apis/idn-direct-api.md) · [All operations](https://skmtc.dev/intellicheck/apis/idn-direct-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/intellicheck/idn-direct-api/revisions/9ce4fb734b46/schema)