subscriptionBillingIssue abstract method

Future<Purchase> subscriptionBillingIssue()

Fires when a subscription enters a billing-issue state that needs user action (payment method failed, card expired, etc.). Cross-platform unification:

  • iOS 16.4+ / Mac Catalyst 16.4+ / visionOS 1.0+: delivered via StoreKit 2 Message.Reason.billingIssue.
  • Android (Play flavor, Billing 8.1+): emitted when isSuspended == true is first detected on a previously healthy subscription. Requires Google Play Billing Library 8.1.0 or newer.
  • Android (Horizon flavor): NOT emitted. The Horizon Billing Compatibility SDK implements the Play Billing 7.0 API surface which does not expose a suspended-subscription signal.
  • Android (Amazon flavor): NOT emitted. Amazon Appstore IAP does not expose an equivalent subscription billing-issue signal.

Listeners should not assume the event will fire on every store. Direct users to the platform subscription management UI (deepLinkToSubscriptions) to resolve the issue.

Implementation

Future<Purchase> subscriptionBillingIssue();