[Ietf-caldav] Processing the ScheduleInbox

[Josh Millar-Usiskin]

Hello everyone. I am currently developing a CalDAV(-schedule) API 
library. I've been using the CalDAV and CalDAV-schedule RFCs as 
reference. One thing that I believe CalDAV-schedule has missed is how to 
determine which calendar collection a message is dealing with. I have 
two use cases of concern:

1) Upon receiving the first REQUEST message, which calendar collection 
should the event be created in, if accepted?

2) Upon receiving an update REQUEST message, the only way that I can 
think of to match the message to the calendar object resource is by UID. 
But according to CalDAV [RFC 4791], a UID is only unique for a 
particular calendar collection. Conceivably, there could be two events 
with the same UID in separate calendar collections for the acting CU.

Any insight that I may have overlooked would be greatly appreciated.

Thanks,

Josh Usiskin