Known Limitations

• Meta Horizon Billing Compatibility SDK is implemented in Kotlin and integration with this library will require Java Android apps to include kotlin-stdlib in the list of dependencies.

• Since version 1.0.0, querying purchases for subscriptions via queryPurchasesAsync or queryPurchaseHistoryAsync does not yield purchases for subscriptions with one single term or period. As a workaround, you can make an extra call to queryPurchasesAsync with BillingClient.ProductType.INAPP to get purchases for subscriptions with one single term or period.
• Only active subscriptions are returned and they are assumed to be “infinitely” recurring - that is, they are expected to recur until canceled.
• Re-purchasing a subscription that has only one billing period option (for example, monthly or annual) will not result in an ITEM_ALREADY_OWNED error. The response will contain a success message but the user will not be charged again.
• Replacement Mode for upgrading or downgrading a subscription is not supported. The ReplacementMode is defaulted to WITH_TIME_PRORATION for all upgrades, and to DEFERRED for all downgrades.

• Only single-item checkout flows are supported. Any attempt to pass in multiple SKUs will return a BillingResult with BillingResponseCode.FEATURE_NOT_SUPPORTED.

• There is no client-side acknowledgement of durables and subscriptions. BillingClient.acknowledgePurchase() is a no-op

• Purchase.orderId is not supported.
• Purchase.signature is not supported.

• BillingClient.queryPurchaseHistoryAsync() provides only a partial view of the history. It will include the latest purchase per-SKU, but does not provide canceled subscriptions, or consumed consumables.

• Billing Configuration is not currently supported.

• Alternative Billing Only is not supported.

• External Offers are not supported.

• In App Messaging is not currently supported.

• 1.0.0
  • Subscriptions with a single term, or period, are missing the necessary details about the billing cycle period.
  • Subscriptions with Trial periods or introductory offers do not provide that information in the Pricing Phases. Only the “base” subscription period and price are returned.
• 1.1.0 and 1.1.0
  • The enableOneTimeProducts() method in the PendingPurchasesParams.Builder class had an unused parameter called config. This parameter was removed in version 1.1.1.

• Integrate Meta Horizon Billing Compatibility SDK
• Implement the Google Play Billing Interface