> For the complete documentation index, see [llms.txt](https://e2payprod.gitbook.io/emoney-and-disbursement/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://e2payprod.gitbook.io/emoney-and-disbursement/introduction.md).

# Introduction

## Purpose

This document provides requirements specification of E-Money API Integration 

## System Architecture

The system architecture overview that illustrate and example of the overall sysem, the connectivity and interaction with each other, is depicted in the diagram below are for disbursement system:

<figure><img src="/files/FvhtrY8r2pM6E4Uv2psf" alt=""><figcaption><p>Disbursement System Topology</p></figcaption></figure>

1. Partners are connected via the internet through each ISP.
2. Then it will be connected to the E2Pay middleware, the middleware will be directed regarding its interconnection needs, whether to environment testing or production.
3. Every transaction requested by the partner will be recorded on the Core E2Pay side.&#x20;
4. Furthermore, from Core it will be forwarded to the principal environment including the disbursement service which will be connected to the switching / Bank.
5. But, before partner can do the disbursement transaction they must topup their account balance, so the transaction can be done.

Here are topology for top up account

<figure><img src="/files/7pOD8VX9fdS38hPHFxin" alt=""><figcaption><p>Topup Channel Topology</p></figcaption></figure>

1. Partners top up via the Emoney M-Bayar Account topup Channel which has been informed by E2Pay
2. Top up can be done through Internet / Mobile Banking services, ATMs, and other top up channels
3. Every topup transaction will be processed by the Bank then the account will be validated by E2pay
4. If it is valid, it will process the addition of the partner's account balance recorded at E2pay
5. If the funds have been added, then other transaction processes can be continued including the Disbursement service.


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