We’re unable to validate your product’s purchase date

I recently bought a MacBook Pro ordered at Apple Online store. When attempting to check the service and support coverage status, I am presented with a webpage that says that the product’s purchase date can not be validated. I am asked to provide a date of purchase. This is a custom configuration and the unit actually got shipped over a couple weeks after originally placing the order. As I understand, this date would be used for 1-year warranty coverage, my question is: What's the valid date of purchase that I should provide here: 1. The date of placing the order? 2. The date of actually receiving the shipment from Apple? I want to make sure that I receive the full 1-year long warranty coverage (as promised by Apple).