GFSA788I

Explanation
 z/OS UNIX operation unixop failed
with  return code rc for NFS client IPv6addr and
hostname hostname.
 In the message text: unixop
The z/OS UNIX operation that failed.
number
The return code.
IPv6addr
The NFS client address in  the form of 0:FFFF:a.b.c.d  
hostname
The hostname and domain name  of the NFS client host. 

System action
 NFS processing continues. 

System programmer response
 See z/OS UNIX documentation (for
example, z/OS UNIX System Services Messages and Codes)
for a full  explanation of z/OS UNIX reason codes.