So this is exactly what I see.
"Document: Passports/Travel Documents (Multiple)
You must provide a clear, legible copy of your valid passport or travel document bio data page.
If using your passport, include a copy of the page that shows your birth date, country of origin, etc.
Your travel document must show proof of status (citizenship or residency), as well as photo identification. Your travel document must be issued by a government and include your name, photo, date of birth, document number, and the issue and expiry dates, if applicable. A travel document is used only by individuals who cannot obtain a passport."
Are we getting various requirements here? Or are they changing over time?