I contacted Sony asking if I could send in my PS3 for repair, even for the warranty is expired, and they said fine, and to agree to the fee of 0

They send an e-mail for an online request form

It’s asking me to fill out the System, Model number, Serial number, and Date of Purchase

Since it isn’t under warranty anymore, it won’t be able to register the date of purchase ( i don’t have it anyway)….It keeps saying make sure to fill out all required fields, but I can’t fill this field since it doesn’t match it

Does anyone know where to fill it out without giving the date of purchase? I can’t find it anywhere