chown with invalid argument

I was given a few NFSV4 mounts on my Linux server. I know that the file system is on VNX VG2 which I do not know much about. What I can tell from export is my server was given Root access to the file system. But when I login as root on my server and try to do chown on the NFS files or directory, I always receive 'invalid argument' error. I can do chmod with no problem. I have no access to the NFS server. Can some one tell me what I can ask my NFS support to change (or set up) so that I can do chown on my NFS mounts.