If you want to test your subscriptions with Stripe, Zoho offers the possiblity of setting up a test organisation. With a test organisation, you can only use test cards in Stripe.

To setup the test organisation, in Zoho Subscriptions, click on your avatar icon, and select manage organisations

In the next menu, you can create a new test organisation - note you can only create ONE test organisation in your subscription:

If you have already a test organisation setup, you can go to the organisation and setup your tests.

The Zoho Subscription test organisation can only be integrated with Stripe Test Mode, and the live organisation can only be integrated with Stripe Live Mode. For more information on these modes, please see the guidance at Stripe: https://stripe.com/doc

Note: it seems that in order to test the Stripe integration with Zoho Subscriptions, you need an American linked credit card number, it is assumed this is due to the Zoho Data Center for Australia being located in the US - if if this changes when Zoho opens a Data Center in Australia, this article will be updated). For test credit cards, see: https://stripe.com/docs/testing#cards