COF013I AN I/O ERROR OCCURRED WHILE READING RECORD nnnnn FROM THE COFVLFxx PARMLIB MEMBER.
Explanation
The system rejected the request to start 
or modify
the virtual lookaside facility (VLF).
An error occurred when the system read a record from the specified
COFVLFxx parmlib member.
In the message text:
- nnnnn
- The number of the record in the parmlib member.
- xx
- The suffix of the COFVLFxx parmlib member.
System action
For a Start command, VLF processing
ends. For a Modify command, the VLF configuration is not replaced.
Operator response
Notify the system programmer.
System programmer response
Investigate the cause of the error, and take appropriate corrective action. If the error cannot be corrected, search problem reporting databases for a fix for the problem. If no fix exists, contact the IBM® Support Center.
Module
COFMINIT
Source
Virtual lookaside facility (VLF)
Routing Code
When issued
for a Start command, 2,10. When issued for a Modify command, none.
Descriptor Code
When issued
for a Start command, 4. When issued for a Modify command, 5.