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Introduction

Welcome to the UPI Plugin Direct PSP Integration Document. This doc consists of the comprehensive information about our Plugin SDK & Backend S2S APIs. We use application/json content type for our request and response.

This documentation is designed to guide you on step-by-step flow, everything you need is outlined in the sections below. Before you dive into the SDK-Calls/APIs, we recommend familiarizing yourself with the Request and Response structure. This will provide you with essential insights into prerequisites and overall formatting, ensuring a smooth integration process.

The docs covers different use cases of a merchant for payments processing :

1st Transactions (Payins & Refunds) where merchants want to acquire/collect money from user on demand basis for one-time payments & refund against original transaction.
2nd Mandates (UPI AUTOPAY) where merchants want to acquire/collect money from user on regular basis for recurring payments by one-time mandate creation(registration). This would mostly be used for Subscriptions, Bill Payments, Investments, Insurance Payments, Donations, Wallet Top-ups etc.