Restore vs. Buy IAP product again

Hello,


I have 1 product id as Non-renewable subscription in ITunes connect.

My product should have a validity of 1 year.

After 1 year it should be possible to buy the same product (identifier) again.

How can I differentiate between

- restore the product and

- after 12 month buy it again?

Thank you in advance




Restore vs. Buy IAP product again
 
 
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