Not able to mount NAS volume on AIX Server

Dear All,

We are facing below issue while mounting NAS volume on AIX server.

AIX version 7.1

root@server1:/#mount 10.100.101.56:/mydata /mnt
mount: 1831-011 access denied for 10.100.101.56:/mydata
mount: 1831-008 giving up on:
10.100.101.56:/mwdata
The file access permissions do not allow the specified action.
root@server1:/#

What could be the possible issue

Kindly guide.

Thanks