Warning : port is not allocated

Kubernetes version:
Installation method: kubeadm
Host OS: RHEL
CNI and version: Flannel

Hi I’m using NodePort Service on Pod
and the configuration is like below
port : 8006
targetPort :8006
nodePort : 8006

I know the default range of nodePort is 30000~39999
but it’s nessesary to be 8006

anyway, for that, I also add some option to the configuration of api-service like below
( --service-port-range = 3000~39999 )

after that, nodePort service up, I noticed status of service like below
Type: warning
Reason: PortOutOfRange
From: Portallocator-repair-controller
Messeage: Port 8006 is not within the port range 30000-32767;

Type: warning
Reason: PortNotAllocated
From: Portallocator-repair-controller
Messeage: Port 8006 is not allocated

is this just warning for recomendation for using 30000-32767
or
could be caused serious problems on App?