RFC 7950, "The YANG 1.1 Data Modeling Language", August 2016

Note: This RFC has been updated by RFC 8342, RFC 8526

Errata ID: 5517
Status: Verified
Type: Technical
Publication Format(s) : TEXT
Reported By: Rohit R Ranade
Date Reported: 2018-10-08
Verifier Name: Joel Jaeggli
Date Verified: 2019-09-24

Section 10.4.2 says:

The derived-from-or-self() function returns "true" if any node in the
   argument "nodes" is a node of type "identityref" and its value is an
   identity that is equal to or derived from (see Section 7.18.2) the
   identity "identity"; otherwise, it returns "false".

It should say:

 The derived-from-or-self() function returns "true" if any node in the
 argument "nodes" is a node of type "identityref" or a type derived
 from "identityref", and its value is an identity that is equal to or
 derived from (see Section 7.18.2) the identity "identity"; 
 otherwise, it returns "false".

Notes:

The node-set can have node which are of types that may be derived from an identityref. Typical example is in ietf-netconf-nmda, where "when 'derived-from-or-self(datastore, "ds:operational")';" is used, but the "datastore" node is of type "datastore-ref" defined in ietf-datastores module, which is in-turn derived from "identityref"

corrected text proposal with additional editing by Martin Bjorklund and Ladislav Lhotka

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