How to properly handle multiple Base Plans in a single subscription without creating duplicate subscriptions in cordova-plugin-purchase?

[ManYesPop]

I have a subscription-based service where the subscription itself grants access to the platform, and the different Base Plans only affect the benefits the user receives.

What I Need to Achieve

• Ensure that a user can upgrade or downgrade between Base Plans seamlessly.
• Prevent a user from having two active subscriptions in Google Play (i.e., they should only have one active subscription object).
• Maintain a single subscription ID with different Base Plans so that Google Play correctly manages transitions.

Questions

• What is the correct way to register and manage multiple Base Plans under a single subscription in cordova-plugin-purchase?
• How can I ensure that Google Play does not allow multiple active subscriptions for the same service?
• Is there a way to detect which Base Plan is currently active using cordova-plugin-purchase?
• Does cordova-plugin-purchase automatically handle Base Plan transitions, or do I need to implement additional logic to ensure smooth upgrades/downgrades?

[ManYesPop]

Any guidance on best practices for handling Base Plans within a single subscription while preventing duplicate active subscriptions would be greatly appreciated.

Thanks in advance!

PD: Sorry is my first request 😄

[j3k0]

Hello, you can register products in the same group using the group property when registering products with store.register().

https://www.iaptic.com/documentation/cordova-plugin-api/interfaces/CdvPurchase.IRegisterProduct.html

When making a new purchase, Google Play adapter will ensure the "oldPurchaseToken" is set if an active purchase exists for a product in the same group, thus replacing it.