yangdump failed

[freidkin-michael]

o-ran-wg4-features.zip

Hi. I have an issue with validate O-RAN yang:

yangdump  o-ran-wg4-features.yang  --log-level=debug2
*** Generated by yangdump 2.13-0
*** Copyright (c) 2008-2012, Andy Bierman, All Rights Reserved.

Attempting to load module 'o-ran-wg4-features.yang'
Loading YANG module from file:
  o-ran-wg4-features.yang
yang_parse: Start module 'o-ran-wg4-features' OK
xmlns_reg: id:16 mod:o-ran-wg4-features uri: urn:o-ran:wg4feat:1.0
Error:  Got 'STATIC-TRANSMISSION-WINDOW-CONTROL or DYNAMIC-TRANSMISSION-WINDOW-CONTROL', Expected: identifier-ref string
o-ran-wg4-features.yang:97.16: error(245): wrong token type

Error:  Got 'STATIC-TRANSMISSION-WINDOW-CONTROL or DYNAMIC-TRANSMISSION-WINDOW-CONTROL', Expected: identifier-ref string
o-ran-wg4-features.yang:108.16: error(245): wrong token type

*** /home/michael/yang/o-ran-wg4-features.yang
*** 2 Errors, 3 Warnings

Yang is attached.
Thanks for help