Open Payment API

1. Introduction

1.1 Pre-requisite of Merchant Integration

2. Merchant Integration

2.1 URL

2.2 Security Control

2.2.1 Hash Signature

2.2.2 Signature Calculation

2.3 HTTP Methods

2.4 Code Table

2.4.1 Status Code

2.4.2 Payment Status Code

3. Payment APIs

3.1 Add Card

3.1.1 Request

3.1.2 Response

3.2 Remove Card

3.2.1 Request

3.2.2 Response

3.3 Sale

3.3.1 Request

3.3.2 Response

3.4 Pre-Authorization

3.4.1 Request

3.4.2 Response

3.5 Capture PreAuth

3.5.1 Request

3.5.2 Response

3.6 Pre-Auth Cancellation

3.6.1 Request

3.6.2 Response

3.7 Void

3.7.1 Request

3.7.2 Response

3.8 Refund

3.8.1 Request

3.8.2 Response

3.9 Transaction Enquiry

3.9.1 Request

3.9.2 Response

Guide

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Developer

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Open Payment API

3.6 Pre-Auth Cancellation

This API is used to cancel the pre-authorization that done before. By calling this API, if accepted, the hold amount will be released from the credit card.

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