Hi all,

This is my AD review for draft-ietf-regext-epp-registry-maintenance.

General:

The use of "maintenance" in this document is sometimes awkward to me,
especially in its plural form.  For instance, the first sentence of the
introduction includes "conduct maintenances", which reads oddly.  I think I
would suggest "conduct maintenance", and change "upcoming maintenances" to
"upcoming maintenance events" (as was done in Section 3.3) or "upcoming
maintenance windows".

Abstract:

Should "registry's" perhaps be "registries" or "a registry's"?

Actually perhaps this is a better solution:

NEW:
This document describes an Extensible Provisioning Protocol (EPP) extension
called "Registry Maintenance Notifications", used by EPP clients and
servers to notify each other about maintenance events.
(END)

Section 1:

I can't quite parse this sentence:

   This mapping provides a
   mechanism by which EPP servers may notify and EPP clients to query
   upcoming maintenances.

Section 2 starts talking about particular EPP elements and commands.  I
think Section 1 should include a normative reference to EPP or some other
document where these are defined.

Section 3.2: "All dates and times attribute values ..." -- s/dates and
times/date and time/

Section 3.3: What does "the name of the maintenance" mean?  Is this
something like a headline or title, or a more complete description?

Also Section 3.3: If there might ever be a need to add more pollType
values, or deprecate one of the ones listed, you might want to consider
creating a registry for them.  If not, this whole document needs to be
updated or revised to include the new values.  I have the same question
about "<maint:reason>", "<maint:impact>", "<maint:environment>", and all of
the others whose possible values are expressly enumerated.

Also Section 3.3: For "<maint:environment>", what is "ote"?

Also Section 3.3: In the examples, the "<maint:id>" seems to be a UUID.  Is
this at the discretion of the implementation (i.e., any format for the
identifier is fine), or should this be constrained explicitly here?

Thank you for including Section 8.

-MSK
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