Try out our new RRULE tool for creating RRULE compatible strings.

An "Organizer" can create, modify, or remove a scheduling object resource, subject to access privileges, preconditions, and the restrictions defined in Section 4.1 of [RFC4791]. These operations are each described next, and how they are invoked via HTTP requests is described in Section 3.2.3.

The "Organizer" of a calendar component can also be an "Attendee" of that calendar component. In such cases, the server MUST NOT send a scheduling message to the "Attendee" that matches the "Organizer".

The server SHOULD reject any attempt to set the "PARTSTAT" iCalendar property parameter value of the "ATTENDEE" iCalendar property of other users in the calendar object resource to a value other than "NEEDS-ACTION" if the "SCHEDULE-AGENT" property parameter value is not present or set to the value "SERVER".

The server MAY reject attempts to create a scheduling object resource that specifies a "UID" property value already specified in a scheduling object resource contained in another calendar collection of the "Organizer".

This document was automatically converted to XHTML using an RFC to HTML converter with the original text document at the Internet Engineering Task Force web site at .  The original text document should be referred to if there are any errors or discrepancies found in this document.

Need to test your iCalendar feeds?

The iCalendar Validator provides developers and testers a method to validate their iCalendar feeds, which can take data from either a URL, file or text snippet and compare it against the RFC 5545 specification.  We believe we have one of the best iCalendar validation tools available on the internet. More information about the validator can be found here.