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Document: draft-ietf-ntp-yang-data-model-??
Reviewer: Tim Evens
Review Date: 2021-02-12
IETF LC End Date: 2021-02-12
IESG Telechat date: Not scheduled for a telechat

Summary:
Overall, nice document.

Major issues:

Minor issues:

Nits/editorial comments:

Spelling correction; s/retriving/retrieving/g

It appears that "bb1d6929 e9593728 7fa37d12 9b756746" is not correctly enclosed in xml.  
The key/hexadecimal-string declares it correctly, but the space delimited string seems out of place. 

"""
    <config>
       <ntp xmlns="urn:ietf:params:xml:ns:yang:ietf-ntp">
         <authentication>
           <auth-enabled>true</auth-enabled>
           <authentication-keys>
             <key-id>10</key-id>
             <algorithm>aes-cmac</algorithm>
             bb1d6929 e9593728 7fa37d12 9b756746
             <key>
               <hexadecimal-string>
                 bb1d6929e95937287fa37d129b756746
               </hexadecimal-string>
             </key>
             <istrusted>true</istrusted>
           </authentication-keys>
         </authentication>
       </ntp>
     </config>
"""

Are the backslashes required here? It seems that many examples have them when there is a value and the closing tag is not on the same line.  For example:

"""
 <data xmlns="urn:ietf:params:xml:ns:netconf:base:1.0">
     <ntp xmlns="urn:ietf:params:xml:ns:yang:ietf-ntp">
       <clock-state>
         <system-status>
           <clock-state>synchronized</clock-state>
           <clock-stratum>7</clock-stratum>
           <clock-refid>192.0.2.1</clock-refid>
           <associations-address>192.0.2.1\
           </associations-address>
           <associations-local-mode>client\
           </associations-local-mode>
           <associations-isconfigured>yes\
           </associations-isconfigured>
           <nominal-freq>100.0</nominal-freq>
           <actual-freq>100.0</actual-freq>
           <clock-precision>18</clock-precision>
           <clock-offset>0.025</clock-offset>
           <root-delay>0.5</root-delay>
           <root-dispersion>0.8</root-dispersion>
           <reference-time>10-10-2017 07:33:55.258 Z+05:30\
           </reference-time>
           <sync-state>clock-synchronized</sync-state>
         </system-status>
       </clock-state>
     </ntp>
   </data>
"""