@bhavesh07 The error message I get in the karaf logs is:

185 - org.opendaylight.controller.sal-netconf-connector - 1.2.3.Lithium-SR3 | RemoteDevice{router1}:

Unable to build schema context,

unsatisfied imports

{SourceIdentifier [name=ietf-netconf-notifications@2012-02-06]=[ModuleImportImpl [name=ietf-inet-types, revision=2010-09-24], ModuleImportImpl [name=ietf-netconf, revision=2011-06-01]],

SourceIdentifier [name=ietf-netconf-monitoring@2010-10-04]=[ModuleImportImpl [name=ietf-yang-types, revision=2010-09-24], ModuleImportImpl [name=ietf-inet-types, revision=2010-09-24]],

SourceIdentifier [name=nc-notifications@2008-07-14]=[ModuleImportImpl [name=ietf-yang-types, revision=2010-09-24]],

SourceIdentifier [name=notifications@2008-07-14]=[ModuleImportImpl [name=ietf-yang-types, revision=2010-09-24]]}, will reattempt with resolved only