IST2255I

Explanation
 This message is the first of a group of messages
that is issued when an internal error  is detected for a topology
resource that represents a transmission group (TG).   A complete description
of the message group follows the example.   IST2255I TOPOLOGY RESOURCE ERROR FOR TG: TGN = tg_number 
IST2256I ORIG = origin_node - DEST = dest_node           
IST314I END

 IST2255I  This message identifies the TG number of the TG with the internal
error.
In the message text: tg_number
The TG number of the TG with the internal error. 

 IST2256I  This message identifies the origin and destination of the TG with
the internal  error.
In the message text: origin_node
The CP name of the origin node of the TG with the internal error.
dest_node
The CP name of the destination node of the TG with the internal
 error.

System action
 Processing continues.

Operator response
 Save the system log and request a dump for
problem determination.  Contact the system programmer.

System programmer response
 See problem determination.

User response
 Not applicable.

Problem determination
 Take the following actions: If you have access to IBMLink, search for known problems with similar
symptoms. If no similar problems are found, report the problem to IBM® by using the Electronic  Technical
Report (ETR) option on IBMLink.  
If you do not have access to IBMLink, report the problem to the IBM software support center. 

Source
 z/OS® Communications
Server SNA

Module
 You can display the module that issues a SNA message
in the message by setting the MSGMOD start option to YES.  See Adding the originating module to the message text for more information about the MSGMOD
start option.

Routing code
 2,10

Descriptor code
 4

Automation
 Not applicable.

Example
  IST2255I TOPOLOGY RESOURCE ERROR FOR TG: TGN = 21  
IST2256I ORIG = NETA.CPS05 - DEST = NETA.CPS10