Identity in a imported module

[OSHINRAJ]

Hi I'm getting the following libyang error when a I try to get the o-ran-hardware.yang model data from the netconf server.

     Identity found, but in a non-implemented module "iana-hardware".
     Failed to resolve identityref "iana-hardware:port". (/ietf-hardware:hardware/component[name='component_port_fh_0_0_0']/class)

I found that from the server side the conformance-type corresponding to the iana-hardware module is import rather than implement, So the Identity iana-hardware:port defined in the iana-hardware module is failed to resolve.

            <module>
                <name>iana-hardware</name>
                <revision>2018-03-13</revision>
                <namespace>urn:ietf:params:xml:ns:yang:iana-hardware</namespace>
                <conformance-type>import</conformance-type>
            </module>
            <module>
                <name>iana-if-type</name>
                <revision>2017-01-19</revision>
                <namespace>urn:ietf:params:xml:ns:yang:iana-if-type</namespace>
                <conformance-type>import</conformance-type>
            </module>

I have gone through the RFC 7950 Section 5.6.6. But it does not specify that, whether the yang-models where these Identities are defined needs to be Implemented or Imported.

Can any one give me a clarification on the same, (It will be helpful if you can point out in any RFC spec)

[michalvasko]

Section 9.10.2, the last paragraph.