> For the complete documentation index, see [llms.txt](https://docs.digit.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.digit.org/public-finance/technology/architecture/low-level-design/digit-exchange.md).

# DIGIT Exchange

## Overview

The DIGIT Exchange Service is a robust data interchange platform designed to facilitate the seamless and secure exchange of digital information between two endpoints. Built with a fixed schema for headers and dynamic messaging capabilities, this service ensures reliable communication while prioritizing data integrity and confidentiality.

### Dependencies

DIGIT-exchange can implement any service if it has the same request structure as the program.

* [Program Service](/public-finance/technology/architecture/low-level-design/program-service.md)

## API Specifications

**Base Path:** /digit-exchange/

### API Contract Link

API spec [YAML is here.](https://raw.githubusercontent.com/egovernments/DIGIT-Specs/refs/heads/ifix-v2.2/Common%20Services/digit-exchange.yaml) Click below to view it in Swagger Editor.

{% embed url="<https://editor-next.swagger.io/?url=https://raw.githubusercontent.com/egovernments/DIGIT-Specs/refs/heads/ifix-v2.2/Common+Services/digit-exchange.yaml>" %}

### APIs

{% openapi src="<https://raw.githubusercontent.com/egovernments/DIGIT-Specs/ifix-v2.2/Common%20Services/digit-exchange.yaml>" path="/exchange/EXCHANGE\_TYPE" method="post" %}
<https://raw.githubusercontent.com/egovernments/DIGIT-Specs/ifix-v2.2/Common%20Services/digit-exchange.yaml>
{% endopenapi %}

## Exchange Flow

<figure><img src="/files/X3Ae6HKsZpb7EGRMrcq4" alt=""><figcaption></figcaption></figure>

## Data Model&#x20;

### DB Schema Diagram

<div align="left"><figure><img src="/files/ZpcgAfTjnlY01SrlwSKz" alt=""><figcaption></figcaption></figure></div>

### Web Sequence Diagrams

#### Sequence of exchange between two environments

<figure><img src="/files/I0SKupxhifeESb54vNdS" alt=""><figcaption></figcaption></figure>

#### Exchange Service example of an exchange

<figure><img src="/files/sUEjoTAwAXOdMR5Bzksl" alt=""><figcaption></figcaption></figure>


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