Major alarm will shown in logs that Virtual-chassis member is having different version, however all members are running on same version and status of VC member is Present.
Alarm Status:
admin@switch> show system alarms1 alarms currently activeAlarm time Class Description2023-04-25 21:18:22 Major Virtual-chassis member is having different software version
Alarm observed Post upgrading or creating EX3400 VC.
Toggle the Mastership on the VC
user@switch> request chassis routing-engine master switch