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

> ## 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-completions

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

SecurityHTTPType basic

Header parametersUser-AgentstringExample{{User-Agent}}

Body parameters<select class='api-response-data' aria-label='Media type'><option value='b30b7ae9-8c2e-4702-977e-ba5ac928aaea'>application/json</option>
</select>object  Example{
    "site_branch_id": "London",
    "pos_location": "POS-01",
    "terminal_id": "TST0001-T07",
    "operator_id": "1122",
    "metadata": {},
    "original_transaction_id": {{transaction_id}},
    "request_timestamp": "2026-01-22T16:23:08+01:00"
}

Responses200

Successful response

<select class='api-response-data' aria-label='Media type'><option value='5d02163d-4be0-404c-a47f-ed1f46303606'>application/json</option>
</select>