How to I check the macbooks activation date?

[iMore Question]

How to I check the macbooks activation date? Although, the device is being used, while checking the serial number on apple's website, it says "we are unable to validiate your product's purchase date". I would be grateful if someone can explain me what it means

 

[Just_Me_D]

You need to provide a copy of the receipt from the purchase of your device in order for Apple to consider it valid.