Hi Jan and Hi All i found a solution about Jan's indication and in particular - Correct yang xpath statement on when condition - Insert in a make file following section ... YANGPATH += /home/nso/NSO-4.3.6/packages/neds/cisco-ios/src/yang \ /home/nso/NSO-4.3.6/packages/neds/cisco-iosxr/src/yang \ /home/nso/NSO-4.3.6/packages/neds/cisco-ios/src/ncsc-out/modules/yang \ /home/nso/NSO-4.3.6/packages/neds/cisco-iosxr/src/ncsc-out/modules/yang .... With this section, when i lanch a make command, i've more warning but nothing error and the packages work fine. Thanks Jan Bye Maurizio ... View more

Hi Jan   thanks for your replay. I corrected makefile and yang file, please see the attached rar files for check. My neds folder are showed in the following screen schot When i re-try make command, following error   [nso@itminso src]$ make /home/nso/NSO-4.3.6/bin/ncsc `ls OPM-IF-ann.yang > /dev/null 2>&1 && echo "-a OPM-IF-ann.yang"` \ --yangpath ../../cisco-ios/src/ncsc-out/modules/yang --yangpath ../../cisco-ios-xr/src/yang -c -o ../load-dir/OPM-IF.fxs yang/OPM-IF.yang ../../cisco-ios/src/ncsc-out/modules/yang/tailf-ned-cisco-ios.yang:114976: warning: when tailf:cli-drop-node-name is given, it is recommended that tailf:cli-suppress-mode is used in combination. using tailf:cli-drop-nodename in a list child without using tailf:cli-suppress-mode on the list, might lead to confusing behaviour, where the user enters the submode without being able to give further configuration. ../../cisco-ios/src/ncsc-out/modules/yang/tailf-ned-cisco-ios.yang:124245: warning: when tailf:cli-drop-node-name is given, it is recommended that tailf:cli-suppress-mode is used in combination. using tailf:cli-drop-nodename in a list child without using tailf:cli-suppress-mode on the list, might lead to confusing behaviour, where the user enters the submode without being able to give further configuration. yang/OPM-IF.yang:19: error: module 'tailf-ned-cisco-iosxr' not found yang/OPM-IF.yang:65: error: the node 'interface' from module 'tailf-ned-cisco-iosxr' (in node 'config' from 'tailf-ncs') is not found make: *** [../load-dir/OPM-IF.fxs] Error 1 [nso@itminso src]$ Do you any idea? Thanks a lot Maurizio ... View more

Hi yfherzog   I modified yang module like your indication without success Please see the following code section   module E-LINERE { namespace "http://com/example/E-LINERE"; prefix E-LINERE; import ietf-inet-types { prefix inet; } import tailf-ncs { prefix ncs; } import tailf-common { prefix tailf; } import tailf-ned-cisco-ios { prefix ios; } description "This module contains a collection of YANG definitions for defining the PW service on TelecomItalia OPM network for the transport network End-2-End"; revision 2018-11-15 { description "Prima revisione"; } augment /ncs:services { list E-LINERE { key name; uses ncs:service-data; ncs:servicepoint "E-LINERE"; leaf name { tailf:info "Service Instance Name"; type string; } leaf deviceA { tailf:info "Selezionare il Primo Apparato"; mandatory true; type leafref { path "/ncs:devices/ncs:device/ncs:name"; } } choice interfaceA { case ios-GigabitEthernet { leaf GigabitEthernet { type leafref { /*path "/ncs:devices/ncs:device/ncs:config/ios:interface/ios:Ethernet/ios:name"; */ path "/ncs:devices/ncs:device/ncs:config/ios:interface/GigabitEthernet/name"; /* "deref(../../deviceA)/../ncs:config/ios:interface/ios:GigabitEthernet/ios:name"; */ } } } case ios-TenGigabitEthernet { leaf TenGigabitEthernet { type leafref { path "deref(../../deviceA)/../ncs:config/ios:interface/ios:TenGigabitEthernet/ios:name"; } } } } My target is to list all available interface for a specific device when I'm configuring my service   admin@ncs(config)# services E-Line pippo deviceA A9K1-F1 interfaceA GigabitEthernet if_numberA ? Description: Interface index Possible completions:   <string> Similar when  I configure a device admin@ncs(config)# devices device A9K1-F1 config cisco-ios-xr:interface GigabitEthernet 0/? This line doesn't have a valid range expression Possible completions:   6/1/0      - === LINK per prove Urbini R. ===   6/1/0.123  -   6/1/0.230  - NSO - Servizio Punto-Punto -   6/1/0.238  - NSO-PROVA   6/1/1      -   6/1/1.345  - NSO - Servizio Punto-Punto - A9K3-MDR to A9K1-F1 for Vlan 345   6/1/2      -   6/1/3      -   6/1/4      -   6/1/5      -   6/1/6      - --More--     ... View more