---
title: "preauth-transactions"
slug: "preauth-transactions"
updated: 2026-01-22T16:52:12Z
published: 2026-01-22T16:52:15Z
canonical: "api-docs.blinkpayment.co.uk/preauth-transactions"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://api-docs.blinkpayment.co.uk/llms.txt
> Use this file to discover all available pages before exploring further.

# preauth-transactions

Post/sandbox/v1/card-present/preauth-transactions

SecurityHTTPType basic

Header parametersUser-AgentstringExample{{User-Agent}}

Body parameters<select class='api-response-data' aria-label='Media type'><option value='cde135fe-7268-4b1f-a658-03c5a3a7dea6'>application/json</option>
</select>object  Example{
  "site_branch_id": "London",
  "pos_location": "POS-01",
  "terminal_id": "TST0001-T07",
  "operator_id": "1122",
  "order_number": "8531",
  "metadata": {},
  "currency": "{{currency}}",
  "requested_amount": "{{randomAmount}}",
  "requested_validity_date": "{{randomValidityDate}}",
  "request_timestamp": "2026-01-22T15:23:08Z",
  "is_receipt_required": false
}

Responses200

Successful response

<select class='api-response-data' aria-label='Media type'><option value='5c00cc27-ed26-4f5d-96b7-c8f31c6e14e6'>application/json</option>
</select>