NFSv4 Permissions issue

Issue

• Permission issue on nfsv4 volume in a RHEL VMs.
• NFS server is Hitachi HNAS, SMU400, and the client is a RHEL 7.3.
• Pre-requisites xheck done i.e user/group ids identical, and the nfs domainalso same.
• All works fine, we can create folders and files with the accorded user, but we can’t do chgrp/chown operations.
• Here are the details:

x.x.x.x:/prod_mqm_shared_qmgrs_2 on /mnt/nfs type nfs4 (rw,relatime,vers=4.0,rsize=65536,wsize=65536,namlen=255,hard,proto=tcp,port=0,timeo=600,retrans=2,sec=sys,clientaddr=y.y.y.y,local_lock=none,addr=x.x.x.x)
tmpfs on /run/user/0 type tmpfs (rw,nosuid,nodev,relatime,size=388208k,mode=700)

[mqm@RHEL7 nfs]$ pwd
/mnt/nfs
[mqm@RHEL7 nfs]$ id
uid=1001(mqm) gid=1001(mqm) groups=1001(mqm)
[mqm@RHEL7 nfs]$ touch file1
[mqm@RHEL7 nfs]$ ll
total 0
-rw-rw-r-- 1 mqm mqm 0 Nov  7 13:31 file1
[mqm@RHEL7 nfs]$ chown mqm:mqm file1
chown: changing ownership of ‘file1’: Operation not permitted
[mqm@RHEL7 nfs]$