Thanks for addressing my review comments which were discussed at https://mailarchive.ietf.org/arch/msg/netmod/AO7wvBa0gJbC-Egt_UuZHKCML70 I believe there are a couple of issues remaining, however it should be easy to address/close them. Issues ====== For "leaf interval", the description mentions a default value but there is no default statement. I believe we need more mandatory statements, or default statement if appropriate, otherwise the behaviour is unknown. For example: - In "container recurrence-first", should "start-time-utc" and "duration" be mandatory? - In "choice period-type", if no choice is made does that mean there is no end to the period? If so, please add that to the description. If not, add a mandatory statement. Nit: the term "recurrence rule" is used a lot in the document, but it is not explained anywhere. In the terminology section, add a reference to 3.8.5.3 of RFC5545? Regards, Reshad.