Why distribution of minutes from CPA requires proof of address

Is anyone able to point me to legislation that explains why my son’s hospital wants me to send them ID over email (which I did) and are now asking for proof of address (over email) before sending me minutes from a CPA meeting which I attended in person and in full at the hospital (where I always have to show my passport on every visit over the psst 3 years)? The minutes will be emailed (not posted) and I am sure I’m the only external attendee being asked this (not the MH Lawyer).
It feels like a made up rule to justify tardiness because I’ve raised a complaint that I’ve not been sent a copy of the notes (from a meeting in October) after literally months of asking and questions are now being asked