acknowledgePurchase

This reference document contains details, parameters, and usage of acknowledgePurchase method, which is used to acknowledge a purchase.

    public abstract void acknowledgePurchase(
    AcknowledgePurchaseParams params,
    AcknowledgePurchaseResponseListener listener
)

You must acknowledge that you have granted entitlement for a subscription purchase in your app.
All purchases require acknowledgement. Failure to acknowledge a purchase will result in that purchase being refunded.
For one-time products, ensure you are using consumeAsync.
For subscriptions use acknowledgePurchase. Please refer to the integration guide for more details.

acknowledgePurchase is used to acknowledge Subscription.

Parameters.	Description
AcknowledgePurchaseParams params	Params specific to this acknowledge purchase request.
AcknowledgePurchaseResponseListener listener	The listener for the result of the acknowledge operation returned asynchronously through the callback with the BillingResponse.