IST155I

Explanation
 VTAM® issues
this message when subtask abnormally terminates.
 code is
the system abend code and indicates the reason for the abend. Check
your operating system abend code manual for a description of code. 

System action
 The system action is determined by the value
of subtask:  ISTCPCRY
VTAM processing continues.
 This subtask is invoked to perform cryptographic management services.
ISTENQIO
VTAM terminates the disk
I/O processing associated with a specific instance of the subtask.
 This subtask is invoked during initialization or by the MODIFY CHKPT
command.
ISTINCXI
VTAM terminates the dump
(static or dynamic). For a static dump, deactivation of the NCP continues.
 This subtask is invoked by the MODIFY DUMP command.
ISTINCXM
VTAM terminates the remote
static dump, dynamic dump, or dump transfer.  This subtask is invoked
by the MODIFY DUMP command.
ISTINC05
Loading of the communication controller is terminated. The command
fails.  This subtask is invoked by conditional, unconditional, and
nondisruptive loads of a 37XX communications controller.
ISTINCR6
The configuration might not be restored to checkpointed status
(START command) or the major node checkpoint record might be lost
(VARY command), but processing of the command continues.  This subtask
is invoked by a checkpoint on a major node.
ISTINCOQ
The module assumes a default reply.  This subtask is invoked by
an attempt by a VTAM module
to write a message that requires an operator reply.
ISTINCY0
If an application program issued an open destination (OPNDST),
the request fails.  Verify that the physical path to the control unit
is available.  Make sure the unit is online and is operational.  If
the operator issued a VARY ACT or VARY INACT command, processing continues,
but the connection or disconnection of the 3791 fails.  This subtask
is invoked by a dial abandon, a dial contact, a dial out, or a dial
enable answer.

Operator response
 Save the system log for problem determination.
Check your operating system abend code manual for a description of
code. 

System programmer response
 Use the output provided and the meaning
of code to assist in determining the     cause
of the abend. Make sure that the failing job step includes a SYSABEND
DD statement. When     the error is corrected, ask the operator to
try the command again.
 See the z/OS Communications Server: SNA Diagnosis Vol
1, Techniques and Procedures for information on the abend procedure.

Routing code
 2

Descriptor code
 5 