IBM Professional Series User Manual page 322

Invalid subsystem was specified on DEALLOCATE (SERV)
You should retry VMPCSERV and contact your
technical co-ordinator if the program continues to fail.
IRRECOVERABLE MACHINE CHECK (DMK008T)
The 370 processor has encountered an error for which
there is no recovery.
L
Line
110
error nnnnn during read operation. Sense data is xx.
(SERV)
You should retry VMPCSERV and contact your
technical co-ordinator if the program continues to fail.
Line 110 error nnnnn during write operation. Sense data is xx.
(SERV)
You should retry VMPCSERV and contact your
technical co-ordinator if the program continues to fail.
LINECT MISSING OR INVALID (DMK034E)
You did not enter the number of lines per page or you
entered it incorrectly.
It
is incorrect if it contains
nondecimal digits or is greater than 255.
M
MODIFY MISSING OR INVALID (DMK253E)
You did not enter the MODIFY operand or it is longer
than four characters.
N
No 'option' specified (DMS005E)
The specified option was entered in an incomplete form.
NO CFRB AVAILABLE (DMK011T)
An error has occurred in the management of console
function requests.
Chapter 8. VM/PC Messages 8-19