GFSA877I

Explanation
 A SYNAD error was detected during a physical I/O
operation. 
 In the message text:
 h_digits1
The value of h_digits1 is the contents of register
0.
h_digits2
The value of h_digits2 is the contents of register
1.
text
The value of text is the message returned from
the SYNAD analysis function macro.
h_digits3
The value of h_digits3 is the access method
return code.
h_digits4
The value of h_digits4 is the access method
reason code.

System action
 The request is stopped.  If the error detected
is a B37, D37, or E37 abend, NFS restores the file size to the last
known file size before the SYNAD error. NFS processing continues.

System programmer response
 A
data management message should have displayed on the console. See z/OS MVS System Messages, Vol 1 (ABA-AOM) through z/OS MVS System Messages, Vol 9 (IGF-IWM) for
a description of the return code to determine the corrective action,
or use LookAt. 