Payment GatewaysGalaxy Pay

Galaxy Pay

Connect Galaxy Pay to PayLexer to accept international card payments in Vietnamese Dong and 14 other currencies through a hosted payment page.

Galaxy Pay is a licensed Vietnamese payment provider whose UPC payment gateway lets merchants in Vietnam accept card payments on a secure hosted payment page. Shoppers enter their card details on Galaxy Pay's page and complete any bank verification there, so your website never handles card data.

Galaxy Pay collects payments in 15 currencies, including Vietnamese Dong and US Dollar.

  • Supported Regions (Merchant Accounts): Vietnam
  • Supported Currencies: VND, USD, THB, JPY, INR, TWD, MYR, SGD, KRW, KHR, MMK, IDR, HKD, CNY, AUD - view full list

Supported Features

  • Hosted payment page for one-time payments by international card, including Visa, Mastercard, American Express, and JCB
  • 3-D Secure and bank verification handled on Galaxy Pay's page
  • Automatic, signed payment notifications with no webhook setup required in Galaxy Pay
  • Separate UAT (test) and live credentials so test payments never touch real money

Before You Start

Make sure you have:

Looking for a different payment processor? View all supported gateways →

Configuring Galaxy Pay

You need an API Key and a Salt from Galaxy Pay for this integration.

Getting API Credentials

Galaxy Pay issues credentials through your account manager, not through a self-service dashboard. You receive one API Key and Salt pair for the test environment, called UAT, and a separate pair for production.

Request your credentials

Ask your Galaxy Pay account manager for your API Key and Salt for both UAT and production. In the same request, ask Galaxy Pay to register processor.paylexer.com as an approved callback domain.

Register PayLexer's callback domain with Galaxy Pay first. Galaxy Pay only sends payment results to web addresses it has approved for your account. Payments fail until the domain is approved. Ask Galaxy Pay to register processor.paylexer.com over HTTPS for both your UAT and production accounts.

Keep both pairs separate

Note which pair is for UAT and which is for production. The values look alike, and each pair works only in its own environment. Keep the Salt private. PayLexer uses it to sign every request sent to Galaxy Pay and to verify every payment notification Galaxy Pay sends back.

Adding Credentials to PayLexer

Open PayLexer Dashboard

Log in to your PayLexer dashboard and navigate to Payment Gateways → Galaxy Pay.

Galaxy Pay in the Payment Gateways list in the PayLexer Dashboard
Galaxy Pay in the Payment Gateways list in the PayLexer Dashboard

Enter your credentials

Paste the API Key and Salt you received from Galaxy Pay. Enter your production pair under the Live tab and your UAT pair under the Sandbox tab.

API Key and Salt fields on the Galaxy Pay settings page in PayLexer
API Key and Salt fields on the Galaxy Pay settings page in PayLexer

Understanding Live/Production and Sandbox Settings:

EnvironmentPurpose
Live / Production (Mandatory)Used for real transactions. Cannot be empty, even when testing.
Test / Sandbox (Optional)Used for testing only. No real money is processed.

How PayLexer selects credentials:

  • Debug/Test mode ON → Test credentials are used
  • Debug/Test mode OFF → Live credentials are used

Test and save

Click Save to save your configuration and verify your credentials. Click Verify Connection to test the connection.

Save and Verify Connection buttons on the Galaxy Pay settings page
Save and Verify Connection buttons on the Galaxy Pay settings page

Webhooks (Automatic)

Galaxy Pay does not use a separate webhook secret or a webhook URL in its portal. PayLexer sends Galaxy Pay a notification address on processor.paylexer.com with every payment and verifies each notification using the Salt you entered. You do not need to copy, paste, or generate anything else.

  • No webhook URL to add in Galaxy Pay
  • No separate signing secret to manage
  • Payment results confirmed in near real time

Integrate Galaxy Pay to Your Website

If you have already added and configured your site, you can enable Galaxy Pay in your existing setup.

Go to Websites

Navigate to Websites in your PayLexer dashboard.

Edit your website

Click the Edit Icon of your added website.

Edit icon next to a website in the PayLexer Websites list
Edit icon next to a website in the PayLexer Websites list

Enable Galaxy Pay

Click the checkbox to enable Galaxy Pay for the website.

Galaxy Pay checkbox in the website's payment gateway settings
Galaxy Pay checkbox in the website's payment gateway settings

If you haven't added a website yet, Continue to Add Your Website →

Troubleshooting

Best Practices

  • Test in Sandbox before enabling production.
  • Ask Galaxy Pay to register processor.paylexer.com for both UAT and production before your first test.
  • Store both Live and Test credentials so you can safely test before going live.
  • Keep your Salt private and never share it outside PayLexer.

FAQs

Still Have Questions?

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