# Get Issuer
source: https://developer.mastercard.com/priceless-planet-carbon-tracker/documentation/use-cases/get_issuer/index.md

## Overview {#overview}

The `GET /issuer` endpoint fetches the issuer details from the CCE platform.

## Pre-requisites {#pre-requisites}

There are no pre-requisites for the issuer to use this service.
Tip: To create your project on Mastercard Developers, refer to the [Quick Start Guide](https://developer.mastercard.com/priceless-planet-carbon-tracker/documentation/quick-start-guide/index.md) for more information.

## Sequence Diagram {#sequence-diagram}

The following sequence diagram shows the order of events for a solution that uses the `GET /issuers` endpoint.
Diagram get_issuer

## Execution Steps {#execution-steps}

The following details the steps in the above sequence diagram:

1. The issuer sends the request for fetching issuer details from the Carbon Calculator Experience platform.
2. The issuer app sends the GET Issuer request to the issuer server.
3. The issuer server sends the GET Issuer request to the `GET /issuers` endpoint.
4. The Carbon Calculator Experience application fetches the issuer details from the database.
5. The application returns the issuer information to the issuer server.
6. The issuer server stores the user ID and sends it back to the issuer app if required.
7. (Optional) The issuer app displays the successfully fetched issuer details.

## Error Messages {#error-messages}

You receive an error response for an invalid request or any missing request parameter.
Note: For more information about the error codes, refer to the [Code and Formats](https://developer.mastercard.com/priceless-planet-carbon-tracker/documentation/code-and-formats/index.md) section.

## Endpoint {#endpoint}


API Reference: `GET /issuers`

## Sample Request and Response {#sample-request-and-response}

For more details on the sample request and response, refer to the [How to call the Get Issuer API](https://developer.mastercard.com/priceless-planet-carbon-tracker/tutorial/test-cases/step6/index.md) tutorial.