[yang-doctors] The use of must and error message for config false!

Dhruv Dhody <dd@dhruvdhody.com> Thu, 17 November 2022 13:23 UTC

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From: Dhruv Dhody <dd@dhruvdhody.com>
Date: Thu, 17 Nov 2022 13:22:51 +0000
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To: yang-doctors@ietf.org
Cc: tom petch <ietfc@btconnect.com>, pce-chairs <pce-chairs@ietf.org>, draft-ietf-pce-pcep-yang@ietf.org
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Subject: [yang-doctors] The use of must and error message for config false!
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Hi,

Tom (in cc) gave this comment on draft-ietf-pce-pcep-yang regarding the use
of must and error-message for config false nodes->


> I do not understand the use of must + error-message for config false.  I
> am used to it for validating an update and cannot see when this message
> will be generated.  This occurs in a number of places.
>
>
My reply was  ->

--

https://www.rfc-editor.org/rfc/rfc7950.html#section-7.5.3 says "The
constraint is enforced according to the rules in Section 8
<https://www.rfc-editor.org/rfc/rfc7950.html#section-8>."

where https://www.rfc-editor.org/rfc/rfc7950.html#section-8.1 says "If the
constraint is defined on state data, it MUST be true in a valid state data
tree."

I did not see any guidance on what happens with error-message in this case.
I have kept this comment pending for now. I will check with YANG experts!

--

And thus this email! Any suggestions? Thoughts?

Thanks!
Dhruv

[yang-doctors] The use of must and error message … Dhruv Dhody