"In iTunes IAP space" Give a monthly subscription with 7 days freeTrail, what would be sequence of iTunes V2 notification for the following behaviour? When an end user purchases a subscription that includes a free trial. When the user transitions from the free‑trial period to the paid subscription period.

Hello, We are consuming App Store's V2 notification feature. Is there any defined timeout period before which we need to send the 200 response code back to App Store? i.e is there any predefined timeout value like 5 sec or 10 sec before which the server application needs to send the 200 response? In the below documentation details about the expected respond code only https://developer.apple.com/documentation/appstoreservernotifications/responding_to_app_store_server_notifications