I want to sell the same subscription in multiple apps so that if someone subscribes in one they show up as having a subscription in the other.
Apple's documentation states "To get started, use App Store Connect to create a separate and equivalent auto-renewable subscription for each app that offers the multi-app subscription so that users can subscribe from any app." (https://developer.apple.com/documentation/storekit/in-app_purchase/original_api_for_in-app_purchase/subscriptions_and_offers/offering_a_subscription_across_multiple_apps)
But I'm unable to create two subscriptions with the same Product ID. I could create two subscriptions that are equivalent but with different Product IDs that are treated as the same by our server, which would accomplish the main goal, but I believe this risks someone subscribing to both subscriptions if they do so directly through the App Store, for example using a promo code link, because they're still two different subscriptions to Apple.
Thanks!