IST690I
CONNECTION REQUEST DENIED — INVALID STATION ID = stationid

Explanation

VTAM® issues this message when a switched connection between VTAM and a physical unit was unsuccessful because the station identifier stationid did not resolve to a node name in an active switched major node. A complete description of the message group follows. 
 IST690I  CONNECTION REQUEST DENIED - INVALID STATION ID = stationid
[IST1544I   DIAL OUT PURGE IN PROGRESS - ID = nodename]
 IST081I  LINE NAME = linename, LINE GROUP = groupname, MAJNOD = nodename
 IST956I PU SAP=sapaddress MAC=macaddress
 IST314I  END
IST081I
  • linename is the line to which nodename is connected.
  • groupname is the line group to which the line linename belongs.
  • nodename is the major node with which the line is associated.
IST690I
IST956I
  • Provides the remote LAN address of the PU if the failure is detected during REQCONT processing and the DLC information is available.
  • sapaddress is the service access point (SAP) address for the LAN connection that the major node defines.
  • macaddress is the 12-digit hexadecimal medium access control (MAC) address for the LAN connection that the major node defines. If no macaddress was defined, zeroes are displayed.
IST1544I
  • nodename is the physical unit (PU) that dialed out on the associated line.

    A dial in and a dial out to use the same line were attempted at the same time and both requests were rejected.

    There are two possible causes for the problem:
    • A physical unit (PU) did a dial out, but the request contact information (cpname or stationid) received in contact RU (REQCONT) matches a different PU defined in VTAM.
    • Two different PUs, one performing dial out and the other performing dial in over the same line, cause a race condition.

    In both cases, the PU that attempted to dial out is displayed.

System action

The connection to the physical unit is broken.

For message IST1544I, the dial in is rejected and the dial out is purged.

Operator response

Save the system log for problem determination.

For IST1544I Save the system log for problem determination.

System programmer response

Possible reasons for this problem are:
  • The switched major node that contains the PU definitions for this physical unit is not active. The physical unit could be attached to a Token Ring.

    Activate the switched major node that contains the definitions for this physical unit.

  • A remote terminal operator initialized a physical unit with the wrong ID.

    Have the remote operator re-initialize the physical unit with the correct station identifier.

  • The VTAM definition statements are incorrect.

    Correct the VTAM definition statements before your operator tries to redial by taking the following actions:

    1. Enter a VARY INACT command for the switched major node.
    2. Modify and file new VTAM definition statements.
    3. Reactivate the switched major node.
    4. Redial.
  • Dynamic definition of the physical unit fails for one of the following reasons:
    • The XID exit has not been activated or the XID exit has not been defined.

      Verify that the XID exit is in the VTAMLIB and that the exit has been activated. See z/OS Communications Server: SNA Customization for more information on the XID exit.

    • The XID exit is active, but the MODEL major node is not active, not valid, or contains an error.

      In this case, message IST1016I precedes this message and provides more specific information about the cause of the failure.

  • The switched PU is not in a valid state. This can occur during recovery processing when a PU that is being deactivated by the host through one boundary function, such as NCP, dials in through another boundary function. The PU deactivation can occur in response to an operator command or internal INOP processing. If the current resource state of the PU in VTAM is not CONCT (connectable), the dial request will fail.

    Since this situation occurs as a result of internal recovery processing, no operator or programmer actions are needed. When the reactivation of a PU is complete and the state becomes CONCT, the dial request will be successfully completed.

For IST1544I Ensure that the correct CP name or station ID (IDBLK/IDNUM) is specified on the switched PU definition statement for the PU that is performing the dial out.

Routing code

8

Descriptor code

4

Parent topic: IST messages for VTAM network operators IST400I – IST799I