PayPal Sandbox Card Test System: How to Test Cards

ABOUT US

What is ONYX GiftCards?

Onyx Gift Cards is a Grenadian company designed to introduce, market and manage gift cards systems in Grenada for retailers and corporations. We are enthusiastic about the effect and influence we will have on the local market. We intend to expand our systems regionally with a range of product offerings and services.

What is a Gift Card?

Gift cards are the preferred way of giving and receiving gifts. They carry a monetary value that can be redeemed for gifts at your favorite store.
Onyx GiftCards are “Open Gift Cards” which means that they can be redeemed at multiple merchant locations. They are standard credit card size, can fit into the average wallet and made of PVC plastic. Onyx GiftCards are Barcoded for security and safety for the consumer and bear a disclaimer at the back.
Onyx Giftcards can be bought with a branded Card backer which is black in colour and is designed to fit the card. There is an area to write a brief message to the recipient as well.

How it Works?

Buy an Onyx Gift Card at these local stores
Give your gift card to friends, family, co-workers, etc.
The recipient can shop at our select merchants nationwide
Your friends, family, co-workers, etc. will present their gift card at checkout to pay for your item(s)
They will walk away happy with the best gift ever...the gift of Choice

Why ONYX GiftCards?

Save TIME. No need to run around looking for the perfect gift
Redeem from a variety of business island-wide. We will continue adding businesses as fast as ONYX grows.
ONYX Gift Cards do not expire
Cards are valued at convinient amounts to meet every need and occasion

What the PayPal Sandbox Card Test System Is

The PayPal Sandbox card test system is a closed test environment where developers submit fake card numbers and watch how PayPal responds. No real money moves, no bank is contacted, and no real card is charged. Test cards work only against Sandbox accounts and Sandbox API credentials. The live PayPal environment rejects them.

You use it to check three things: that your checkout calls reach PayPal, that approved payments complete, and that your code handles declines and error responses without breaking.

Steps

Open the Sandbox section, then open Accounts.

Click Create Account and pick the Business type, matching the country and currency of your live account.

Create a second account with the Personal type. This is the buyer you will pay with.

Select the Business account, open its settings, and turn on negative testing when you plan to test declines.

Open Apps and Credentials, select the Sandbox tab, and copy the client ID and secret for your app.

Start a checkout in your test store, or send an Orders v2 create request using the Sandbox credentials.

At the card form, enter a Sandbox test card number, a future expiration date, and a three digit security code, four digits for American Express.

Submit the payment and log the exact response code your integration receives.

Set a specific error code on the Sandbox account and rerun the flow to confirm your decline handling works.

Test Card Numbers PayPal Documents

Widely published Sandbox numbers include Visa 4111111111111111, Mastercard 5555555555554444, American Express 378282246310005, and Discover 6011111111111117. Use any expiration date in the future. For US Sandbox accounts, pair the number with a billing ZIP code in valid format. Always check the current list inside the Developer Dashboard, because PayPal updates its test data.

Reading the Results

A successful run returns a completed status on the order or payment object, and the transaction appears in the Sandbox Business account activity. A simulated failure returns a specific error code, such as a declined instrument or an expired card, at the point in the flow where your code should branch. Match each code to a handler before you move to live credentials.

Latest