Paypal asking for invoice and supplier info

I recently sold a lot of Titan-X Ultimates on Ebay however they were for pre-order and was stated shipments would begin September 7th to the 10th which is still technically within ebay guidelines as it would be under 30 days.

Now of course since I buy these locally there is no invoices as it's from a warehouse and I'm pre-ordering from them.

So what should I do, I could fake the info pretty easily and I know paypal doesn't really follow up on it but what's the off chance they do decide to look into it?