Good Morning,


Thanks for the comments Thomas!



I will look at the consistency of the error codes in sections 3.2 and 5.1.1.



As far as the text in the "avail" section you mention, I think this was meant 
as some combination of these items makes it invalid, not necessarily that a 
single item is invalid. I will look at wording to clarify.



Thanks for catching the mismatch on the <fee:command>. Before updating the 
scheme I think it would be good to have the discussion on if this functionality 
is needed/wanted: would it be useful for the client to be able to not pass a 
<fee:command> in the <check> command?





Thanks

Roger



-----Original Message-----
From: regext [mailto:regext-boun...@ietf.org] On Behalf Of Thomas Corte
Sent: Wednesday, March 22, 2017 6:08 AM
To: regext@ietf.org
Subject: [regext] draft-ietf-regext-epp-fees-02.txt: currency error handling, 
command wildcard



Hello,



I've noticed two more issues with the latest EPP fee extensions draft, detailed 
below.



Generally, I wonder if this mailing list is the right place to report such 
issues. Should I rather contact the authors directly, or is there a bug tracker 
set up for this purpose?





Issues:



1) There seem to be contradictory requirements regarding the handling of 
invalid currency codes. In section 3.2, the draft says:



  "Servers SHOULD NOT perform a currency conversion if a client uses an

   incorrect currency code.  Servers SHOULD return a 2004 "Parameter

   value range" error instead."



However, in 5.1.1, it says:



     "An OPTIONAL <fee:currency> element.  If the server does not

      support <fee:currency> value, it MUST return a 2306 error

      response;"



Further below, the draft offers a third option:



  "The <fee:command> element also has an OPTIONAL "avail" attribute

   which is a boolean.  If the value of this attribute evaluates to

   false, this indicates that the server cannot calculate the relevant

   fees, because the object, command, currency, period or class is

   invalid according to server policy."



So this would indicate that an invalid currency in a <fee:check> should not 
result in an EPP error at all, but merely cause a non-available fee check 
result (an option which I would prefer).



I believe this requires some unification, or clarification as to when to use 
which code (in the responses to transform commands at least), or when to use 
avail="false".





2) In the description for the <fee:check> response, the draft says:



     "If a <fee:object> element in the client command contains no

      <fee:command> element the server SHOULD return a <fee:command>

      element for each server billable transaction combination of the

      <fee:object>."



However, such a case cannot occur since the definition of the "objectCheckType" 
complex type currently requires at least one <fee:command> element (minOccurs 
is not set and defaults to 1).

This should be changed in the schema so that the intended "command wildcard" 
option becomes available.



Best regards,



Thomas



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