Stable ID for Current Subscription

I see that there is a property `EntitlementInfo.latestPurchaseDate` — this means that an entitlement ‘knows’ which transaction is the cause of its currently being granted, if in fact it is active.

I guess what would do the job is another property `EntitlementInfo.latestTransactionId` which would expose the underlying StoreKit transaction ID. I could use this as a key unique to the current continuous subscription period for a given entitlement.

Is there any workaround to get this transaction ID with the current SDK? Any ideas about promotional entitlements (which presumably don’t have any underlying StoreKit events or objects)?

Could you use the activeSubscriptions property on the CustomerInfo object for this?

https://revenuecat.github.io/purchases-ios-docs/5.6.0/documentation/revenuecat/customerinfo/activesubscriptions

Thanks Ryan. I’m not really seeing how this would help? Are you suggesting that I loop over the active subscriptions and choose one based on the active entitlements and some business logic, after which I can use the original transaction ID from that subscription as the stable ID?

I guess to clarify what I’m really after: a stable ID for the current continuous period of entitlement, which changes after a break in access to that entitlement, or when another entitlement (which my business logic says represents a higher or lower level of service) becomes active.

It seems like this conceptually possible because the entitlements carries an original purchase date and a product identifier, so your backend clearly knows which purchase caused the entitlement to become active and there is ultimately a transaction ID for that purchase.