---
title: Travel Extension Overview
slug: public-apis/travel-extension-overview
createdAt: 2026-03-10T14:46:46.692Z
---

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**Topic type: Concept**

:::hint{type="warning"}
**Purpose**: Legacy Travel Fraud API overview, differences, and hashing requirements. 

**Audience**: API integrators and client developers. 

**Applies to**: Legacy Travel clients implementing via API.

**Does not apply to**: Universal APIs, any other industry, or travel clients who opt for a non-API integration.
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The Universal Travel API extends the Universal Fraud API shared transaction model for multi-component travel purchases.

Travel transactions may include combinations of flights, lodging, vehicle rentals, cruises, activities, agency information, and insurance information within a single request.

## Travel Extension Model

The Universal Travel API may extend the shared transaction structure with:

- Flight Information
- Lodging Information
- Car Rental Information
- Cruise Information
- Activity Information
- Agency Information
- Insurance Information

:::hint{type="info"}
<font color="#386B84">**Note**</font>: See [Travel Complete Request Structure](docId\:lozpgnfpwZGlAOcaOURAs) for the full path.
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## What Makes Travel Different

Travel transactions can be:

- **Future-dated** (book now, consume later)
- **Multi-component** (flight + lodging + rental + activities)
- **Third-party booked** (agency/OTA involvement)

The Travel API supports optional structures for:

- lodging reservations, guests
- car rental details
- cruise details
- activity/excursion details
- agency details
- insurance policy context

## Hashing Requirements

The Travel API follows the platform hashing rules. Fields designated as hash-required must be hashed before submission, including:

- `giftCardNumber`
- `hashedPassword`

See: **[Hashing Requirements](docId\:yuGHwVL8eOn7vCgSwPcd3)** (Constraint) and **[Accertify Hash Algorithm](docId\:rKIK1Lb6EUUWsz3sxPCe-)** (Reference).

## Field Reference

::::LinkArray{contentSource="CUSTOM"}
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[Travel pre-authorization risk score](docId\:njPYtOz70gAvGnAbx1KHj)
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:::LinkArrayItem
[Travel post-authorization risk score](docId\:aPFLU-NM2y8gg6OZQrjlN)
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:::LinkArrayItem
[Travel authorization update](docId:7wlysSOvZkxPTGgClwNew)
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:::LinkArrayItem
[Travel fulfillment update](docId\:F1xUV-YFYdBCgfWXcQh6y)
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:::LinkArrayItem
[Travel chargeback update](docId\:YXTTKJdcupc__RX-BAqkd)
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