Hello!   I have the below YANG file and MakeFile for a simple firewall service. In it - I am trying to leafref the device's interfaces so you can see them in a drop-down list in the GUI .   ===FW_SERVICE.yang===   module FW_SERVICE { namespace "http://com/example/FW_SERVICE"; prefix FW_SERVICE; import ietf-inet-types { prefix inet; } import tailf-ncs { prefix ncs; } import tailf-common { prefix tailf; } import tailf-ned-fortinet-fortios-non-vdom { prefix fortinet-fortios-non-vdom; } list FW_SERVICE { key name; uses ncs:service-data; ncs:servicepoint "FW_SERVICE"; leaf name { type string; } // may replace this with other ways of refering to the devices. leaf FW_OBJECT_NAME { tailf:info "New Firewall Object Name"; type string; } leaf FW_WO_COMMENT { tailf:info "WO Reference Comment"; type string; } leaf FW_OBJECT_SUBNET { tailf:info "FW Object Subnet Address"; type string; } leaf FW_OBJECT_NETMASK { tailf:info "FW Object Subnet Address Netmask"; type string; } leaf FW_POLICY_NAME { tailf:info "FW Policy name"; type string; } leaf FW_PORT_SRC { tailf:info "Incoming Interface"; type leafref { path "deref(../../device)/../ncs:config/fortinet-fortios-non-vdom:system/fortinet-fortios-non-vdom:interface/fortinet-fortios- non-vdom:interface-list"; } } leaf FW_PORT_DST { tailf:info "Outgoing Interface"; type string; } leaf-list FW_OBJECT_DESTINATION { tailf:info "Destination Object"; type string; } leaf FW_ACTION { tailf:info "FW Action - cccept or deny"; type string; } leaf-list FW_SERVICE { tailf:info "Destination Services to add"; type string; } // replace with your own stuff here } }   ===MakeFile=== all: fxs .PHONY: all # Include standard NCS examples build definitions and rules include $(NCS_DIR)/src/ncs/build/include.ncs.mk src=$(wildcard yang/*.yang) DIRS = ../load-dir FXS = $(SRC:yang/%.yang=../load-dir/%.fxs) YANGPATH += ../../fortinet-fortios-cli-5.4/src/ncsc-out/modules/yang ## Uncomment and patch the line below if you have a dependency to a NED ## or to other YANG files # YANGPATH += ../../<ned-name>/src/ncsc-out/modules/yang \ # ../../<pkt-name>/src/yang NCSCPATH = $(YANGPATH:%=--yangpath %) YANGERPATH = $(YANGPATH:%=--path %) fxs: $(DIRS) $(FXS) .PHONY: fxs $(DIRS): mkdir -p $@ ../load-dir/%.fxs: yang/%.yang $(NCSC) `ls $*-ann.yang > /dev/null 2>&1 && echo "-a $*-ann.yang"` \ $(NCSCPATH) -c -o $@ $< clean: rm -rf $(DIRS) .PHONY: clean     Now the error that it throws at me :   [root@localhost src]# pyang yang/FW_SERVICE.yang yang/FW_SERVICE.yang:5: warning: imported module ietf-inet-types not used yang/FW_SERVICE.yang:14: error: module "tailf-ned-fortinet-fortios-non-vdom" not found in search path /home/horia/ncs-5.3/src/ncs/yang/ietf-yang-schema-mount.yang:2: error: bad value "1.1" (should be version) /home/horia/ncs-5.3/src/ncs/yang/ietf-yang-schema-mount.yang:9: error: unexpected keyword "reference" /home/horia/ncs-5.3/src/ncs/yang/ietf-yang-schema-mount.yang:15: error: unexpected keyword "reference" /home/horia/ncs-5.3/src/ncs/yang/tailf-ncs-cluster.yang:2: error: bad value "1.1" (should be version) /home/horia/ncs-5.3/src/ncs/yang/tailf-ncs-common.yang:2: error: bad value "1.1" (should be version) /home/horia/ncs-5.3/src/ncs/yang/tailf-ncs-compliance.yang:2: error: bad value "1.1" (should be version) /home/horia/ncs-5.3/src/ncs/yang/tailf-ncs-customers.yang:2: error: bad value "1.1" (should be version) /home/horia/ncs-5.3/src/ncs/yang/tailf-ncs-devices.yang:2: error: bad value "1.1" (should be version) /home/horia/ncs-5.3/src/ncs/yang/tailf-ncs-devices.yang:3789: error: XPath function "derived-from-or-self" is not defined in the XPath context /home/horia/ncs-5.3/src/ncs/yang/tailf-ncs-devices.yang:3997: error: XPath function "derived-from-or-self" is not defined in the XPath context /home/horia/ncs-5.3/src/ncs/yang/tailf-ncs-java-vm.yang:2: error: bad value "1.1" (should be version) /home/horia/ncs-5.3/src/ncs/yang/tailf-ncs-log.yang:2: error: bad value "1.1" (should be version) /home/horia/ncs-5.3/src/ncs/yang/tailf-ncs-packages.yang:2: error: bad value "1.1" (should be version) /home/horia/ncs-5.3/src/ncs/yang/tailf-ncs-plan.yang:2: error: bad value "1.1" (should be version) /home/horia/ncs-5.3/src/ncs/yang/tailf-ncs-python-vm.yang:2: error: bad value "1.1" (should be version) /home/horia/ncs-5.3/src/ncs/yang/tailf-ncs-service-progress-monitoring.yang:2: error: bad value "1.1" (should be version) /home/horia/ncs-5.3/src/ncs/yang/tailf-ncs-services.yang:2: error: bad value "1.1" (should be version) /home/horia/ncs-5.3/src/ncs/yang/tailf-ncs-smart-license.yang:2: error: bad value "1.1" (should be version) /home/horia/ncs-5.3/src/ncs/yang/tailf-ncs-snmp-notification-receiver.yang:2: error: bad value "1.1" (should be version) /home/horia/ncs-5.3/src/ncs/yang/tailf-ncs-software.yang:2: error: bad value "1.1" (should be version) /home/horia/ncs-5.3/src/ncs/yang/tailf-ncs-ssh.yang:2: error: bad value "1.1" (should be version) /home/horia/ncs-5.3/src/ncs/yang/tailf-ncs.yang:2: error: bad value "1.1" (should be version)   If I try to compile the file :   [root@localhost src]# make --debug GNU Make 3.82 Built for x86_64-redhat-linux-gnu Copyright (C) 2010 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Reading makefiles... Updating goal targets.... File `all' does not exist. File `fxs' does not exist. Prerequisite `yang/FW_SERVICE.yang' is newer than target `../load-dir/FW_SERVICE.fxs'. Must remake target `../load-dir/FW_SERVICE.fxs'. Invoking recipe from Makefile:27 to update target `../load-dir/FW_SERVICE.fxs'. /home/horia/ncs-5.3/bin/ncsc `ls FW_SERVICE-ann.yang > /dev/null 2>&1 && echo "-a FW_SERVICE-ann.yang"` \ --yangpath ../../fortinet-fortios-cli-5.4/src/ncsc-out/modules/yang -c -o ../load-dir/FW_SERVICE.fxs yang/FW_SERVICE.yang yang/FW_SERVICE.yang:52: error: the node 'device' from module 'FW_SERVICE' is not found make: *** [../load-dir/FW_SERVICE.fxs] Error 1     As for the NED - I am using this one :   [root@localhost packages]# ls | grep forti fortinet-fortios-cli-5.4   Am struggling a little bit with this .   Best regards!   ... View more