APPLICATION_TOKEN

ADMIN_ACCESS_TOKEN

BASE_URL

USER_TOKEN

CARD_PRODUCT_TOKEN

CARD_TOKEN

TRANSACTION_TOKEN

TRANSACTION_AMOUNT

GPA_ORDER_TOKEN

GPA_UNLOAD_TOKEN

Marqeta's Core API allows companies to launch and manage their payment card programs.

Creating Payment Card Programs using Marqeta API in JavaScript.png

marqeta-final.tar.gz

Marqeta React App

Marqeta is a modern card issuing and transaction processing platform that streamlines business payments by working with card networks and issuing banks to issue cards, authorize transactions, and communicate with settlement entities.

In this course, you will learn about Marqeta’s Core API, its resources, and the relationships among them. Next, you will get to learn how to create and manage these resources and their relevant functionalities. Then, you will learn how to simulate transactions and their reversals in a sandbox test environment using a Marqeta payment card. In addition to this, you will also learn how to create a simple application using the Marqeta API integration. Finally, this course will provide some recommendations and resources for further exploration of Marqeta’s Core API and its integration.

After completing this course, you will be able to create a simple application with the Marqeta API integration and be able to implement a majority of its functionality.

Creating Payment Card Programs using Marqeta API in JavaScript

In this lesson, we'll learn to unload a GPA order. We'll also learn to retrieve a specific GPA unload with its unique token.

## Create a GPA unload

We can unload a GPA order by making a `POST` request to the `{BASE_URL}/gpaorders/unloads` endpoint. This allows us to return the funds from the GPA to the funding source. We must specify the token of the original GPA order we want to unload and the amount to be returned. This amount must be less than or equal to the amount of the original GPA order.

### Request parameters
The above endpoint uses the following parameters:


In this lesson, we'll learn to unload a GPA order. We'll also learn to retrieve a specific GPA unload with its unique token.

# Create a GPA unload

We can unload a GPA order by making a `POST` request to the `{BASE_URL}/gpaorders/unloads` endpoint. This allows us to return the funds from the GPA to the funding source. We must specify the token of the original GPA order we want to unload and the amount to be returned. This amount must be less than or equal to the amount of the original GPA order.

## Request parameters
The above endpoint uses the following parameters:


Learn to create and retrieve a GPA unload with Marqeta's Core API.

Introduction

Users

Card Products

Cards

General Purpose Accounts

Transactions

Marqeta API Integration in React

Conclusion

Appendix

GPA Unloads

Create a GPA unload

Request parameters