Hi can you please confirm if you have deleted the vdom configuration on the primary or secondary device?
If you have deleted it on the primary please login to the other device and verify if the vdom configurations are deleted from the other device or not.
If the VDOM configuration from the secondary unit is deleted, you can try below step to get the device back in sync: (before that please take backup config's of both devices).
- Failover to Slave.
- Reboot current Master.
- Hope for the configuration on the current Master (without the VDOM) to be synced back to the rebooted firewall.
unregister_vf: waiting for LIG to become free this means the resources allocated for the VDOM are getting free once you deleted the VDOM.