[VCARDDAV] CardDAV: UID property

[Bernard Desruisseaux <[e-mail]>]

Hi,

If I'm not mistaken the presence of the UID property in a vCard is a 
CardDAV requirement and not a vCard requirement.

I don't believe the CardDAV draft makes this clear.  I can't find a MUST 
requirement about the presence of UID.

A new precondition (e.g., CARDDAV:valid-addressbook-object-resource) 
should be added for invalid vCard (per CardDAV spec). My understanding 
is that CARDDAV:valid-address-data should be used for invalid vCard (per 
vCard spec).

Also, Section 10.4 leads one to believe that vCard actually requires the 
UID property:

    Furthermore, address object resources specified in the CARDDAV:
    address-data XML element MAY be invalid per their media type
    specification if the CARDAV:address-data XML element part of the
    address book REPORT request did not specify required vCard
    properties (e.g., UID, etc.) 

Cheers,
Bernard