NFS getattr failed for server <NASservername>: error 9 (RPC: Program/version mismatch),

 Hello Team,

 I am getting below error in /var/adm/messages files and I need some help on fixing this.

 <Server A>: NFS getattr failed for server <NASservername>: error 9 (RPC: Program/version mismatch),

 We are getting the above error in Server A which is having autofs running on it. I checked in /etc/auto_master and auto_direct file but didn’t see anything wrong. So please suggest.

 <Server A>#more /etc/auto_master

# Master map for automounter

#

/net            -hosts          -nosuid,nobrowse

/home           auto_home       -nobrowse

/xfn            -xfn

/-              auto_direct

 <Server A>#grep <NASsharename> /etc/auto_direct

<mount point on client system> <NASservername:NASshare name>