Default Value: 0
Valid Values: Any positive integer
Changes Take Effect: Immediately
Time in seconds to wait for deleting notification subscriptions. In scenarios where the publish notification and the delete subscription requests are received concurrently, the subscription may be deleted before the notification gets published. If you set this option to a value greater than 0, you will force GMS to wait for the specified duration before deleting the subscription and this will allow the pending push notifications to be sent out.