Upload an expense document for a transaction

POST 
/api/transactions/:id/expense-upload

This endpoint uploads an expense document for an existing transaction.

Prerequisites:

To use this endpoint you need to have the ACCOUNTING scope for the API Key. Please contact your relation manager to get this permission.

Eligibility: The transaction type must be enabled in the business partner expense settings targets.

Request

Path Parameters

id stringrequired

Transaction identifier

Header Parameters

Unique-Request-Id string

Possible values: <= 50 characters

An optional unique identifier for the request, limited to 50 characters. Used to track requests and prevent duplication.

multipart/form-data

Body

required

file binaryrequired

Responses

201

Created - The request was processed successfully.

application/json

Schema

Schema

id string
name stringnullable
mimeType string
transactionId integernullable
createdAt string

Datetime of the creation in format Y-m-d H:i:s.

Example (from schema)

{
  "id": 1,
  "name": "document.pdf",
  "mimeType": "application/pdf",
  "transactionId": "1",
  "createdAt": "2027-11-22 13:00:00"
}

400

Bad Request -- Your request is invalid.

application/json

Schema

Schema

detail string
title string

Example (from schema)

{
  "detail": "The `file` parameter is required.",
  "title": "An error occurred"
}

401

Unauthorised -- Your access token is wrong.

application/json

Schema

Schema

type string
title string
detail string

Example (from schema)

{
  "type": "string",
  "title": "string",
  "detail": "string"
}

403

Forbidden -- Access to the requested resource or action is forbidden.

422

Unprocessable Content -- We could not process your request due to invalid data provided.

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