---
title: "Authorize payin by confirming settlement address and optional asset"
method: POST
path: "/entities/{entityDID}/flow/payins/{payinId}/settlement_address"
tags: ["Flow"]
---

# Authorize payin by confirming settlement address and optional asset

`POST /entities/{entityDID}/flow/payins/{payinId}/settlement_address`

Authorizes a payin by providing a settlement address and, optionally, the asset.
Requirements depend on whether the entity is initiator or responder in the workflow.

## Path parameters

- `entityDID` string, did, required — Decentralized Identifier (DID)
- `payinId` string, uuid, required

## Request body

- object
  - `asset` string — Optional asset (CAIP-19)
  - `settlementAddress` string, required — Settlement address (CAIP-10 or payto://)

## Response `200`

Authorization accepted

- object
  - `message` string
  - `transferId` string
  - `asset` string
  - `settlementAddress` string

## Other responses

- `400` — Bad Request - The server could not process the request due to a client error.
- `401` — Unauthorized - Authentication information is missing or invalid.
- `403` — Forbidden - The server understood the request but refuses to authorize it.
- `404` — Not Found - The requested resource could not be found.
- `500` — Internal Server Error - An unexpected condition was encountered on the server.

---

[API](https://skmtc.net/notabene/apis/notabene-api.md) · [All operations](https://skmtc.net/notabene/apis/notabene-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/notabene/notabene-api/versions/70056745a433/schema)