OpenIapSubscriptionBillingIssueListener

```
public interface OpenIapSubscriptionBillingIssueListener

                    
```
Listener for subscription billing-issue events. Fires once per session per purchaseToken when a suspended subscription is observed (payment method failed, card expired, etc.). This includes subscriptions that are already suspended when the app starts.
- Play flavor: populated via Purchase.isSuspended (Billing Library 8.1+).
- Horizon flavor: NEVER invoked. The Horizon Billing Compatibility SDK implements the Play Billing 7.0 API surface which lacks a suspended-subscription signal.

Method Summary

Modifier and Type	Method	Description
`abstract Unit`	`onSubscriptionBillingIssue(Purchase purchase)`	Called when a subscription enters a billing-issue state

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - onSubscriptionBillingIssue
```
 abstract Unit onSubscriptionBillingIssue(Purchase purchase)
```
    Called when a subscription enters a billing-issue state
    
    Parameters:
    
    purchase - The affected purchase with isSuspended == true