Hi krishna556 and Dr_Goldman,
what version of ONTAP are you currently using? This might be an instance of BURT 1041972, in which case it is an internal ONTAP issue which is addressed starting with ONTAP 9.1.
If you confirm that there is no issue accessing the data from the clients, then it can also be safe to ignore those messages.
For further information please see https://kb.netapp.com/app/answers/answer_view/a_id/1005337.
Lorenzo