IST018I

Explanation
 This message is the first in a group of messages
that VTAM® issues when the network
configuration specified on the CONFIG start option could not be initialized.
A complete description of the message group follows the example.  IST018I CONFIG COULD NOT BE INITIALIZED — VTAM START CONTINUES
IST523I REASON = reason
IST314I END

 The second message in the group explains
the reason for the failure. reason     can be one
of the following values: ERROR IN CONFIG LIST
The configuration list contains an error. This error might be
caused by a missing data set        definition statement.
ERROR READING VTAMLST FILE
The specified configuration list could not be found, or an error
occurred while reading        the list. For example, CONFIG=xx was
specified, but there is no        corresponding ATCCONxx configuration
list in the appropriate library.         Another cause might be
that a syntax error in the ATCCONxx         configuration
list is discovered and reported in the IST1249I message group. When
a list         itself contains a syntax error, the entire list is
ignored. 

INSUFFICIENT STORAGE
There is not enough storage available.
NAME IN CONFIGURATION LIST IS NOT VALID
The configuration list contains a major node name or a path definition
name that does not        follow the correct naming convention. VTAM will issue        the message,
but proceed with the remaining nodes.

System action
 VTAM initialization
continues.  If the list itself contains a syntax error, the entire list is
ignored.
If reason is NAME IN CONFIGURATION LIST IS NOT VALID, VTAM continues processing the remaining
nodes in the list.  
For all other reasons, VTAM ignores
the rest of the nodes in the list after the error was encountered. 

Operator response
 To make the network usable while this error
is being investigated, activate parts (or all) of the network using
VARY ACT commands for specific nodes in the network.  If reason is INSUFFICIENT STORAGE, enter
the DISPLAY BFRUSE command or the DISPLAY STORUSE command. Save the
system log and request a dump for problem determination. 
For all other reasons, save the system log
for problem determination.

System programmer response
  If reason is INSUFFICIENT STORAGE, verify
that the operator entered the buffer pool or CSA start options as
specified in the start procedures.  Increase storage as required.
For insufficient storage errors, you might want to redefine your buffer
pool or CSA start options. If the start option cannot be modified
using the MODIFY VTAMOPTS command, you must modify the VTAM start options file (ATCSTRxx)
and restart VTAM to use the
start option.  See the z/OS Communications Server: SNA Resource Definition
Reference for a description of VTAM start options.
See the z/OS Communications Server: SNA Operation for information about the
DISPLAY BFRUSE command and the MODIFY VTAMOPTS command.
See the z/OS Communications Server: SNA Network Implementation
Guide for an explanation and
description of buffer pools and for general information on buffer
pool specification and allocation.
See the z/OS Communications Server: SNA Diagnosis Vol
1, Techniques and Procedures for information about analyzing dumps and
about analyzing storage using the VIT analysis tool, if external trace
is active.

For all other reasons, if you want the specified
configuration, halt VTAM and
correct the configuration list specified by the start option or a
start list. Then have the operator restart VTAM.

Routing code
 2

Descriptor code
 5 