Before you can test in the Alipay sandbox environment, you must create an Alipay merchant account on the Alipay for Business website first.
If you already have an Alipay merchant account, skip to Alipay sandbox portal.
Create an Alipay merchant account
1) Go to the Alipay for Business website: https://global.alipay.com
2) In the top-right corner of the homepage, click Sign Up
3) Enter your email, enter the code displayed, and then click Continue
4) Follow the instructions to complete the account creation.
Alipay sandbox portal
The Alipay sandbox portal contains the information and tools you need to test in the Alipay sandbox environment, which include the test accounts information and the Alipay sandbox app.
Sign in to the Alipay sandbox portal
1) Go to: https://isandbox.alipaydev.com/user/intlAccountDetails.htm
2) Sign in with your Alipay merchant account.
For how to create an Alipay merchant account, see Create an Alipay merchant account.