when I receive a server notification version 2, Am I have to check back with the App Store to get subscription status?

Hello, I am currently using version 2 notification. 

Nevertheless, I think I have to do check back with the App Store to get status is as follows. 

1. It does not pass the current status to notification itself. I can guess the status through eventType & subType, but I thought it should be updated through the API because the exact status is given through API.

2. The server failed to receive Notification, so it was determined that the order of notification may not be guaranteed through retry, etc.

So, I tried to call the get subscription status API when I receive a server notification version 2 because I thought that getting the latest status from the server and updating it would keep it in the right state. 

I wonder if this is the right way to do it. Please give me your advice on this. Thank you.