EZY1982E

Terminating: one task is already active.
Explanation
 To prevent the initiation of multiple TCPIP address
spaces for the same task, the MVS™ platform
code uses the ENQ macro to serialize the use of TCPIP resources. At
task initialization, MVPMAIN issues an ENQ macro with a resource name
of TCPIPSYS.task_name, requesting exclusive use. The message indicates
that the ENQ failed.

System action
 The task is terminated and control is returned
to the system with a task completion code of 9xx, with the xx portion
reflecting the ENQ return code.

Operator response
 If the error was an unintentional attempt
to start a TCPIP task that was already active, no actions are required.
Otherwise, tell the system programmer about the error.

System programmer response
 If the error was not because of an
unintentional attempt to start a duplicate TCPIP task, examine the
task completion code provided when the task was terminated. It will
be of the form 9xx, with the xx portion of the code being the ENQ
return code. See the appropriate Application  Development Reference:
Services for Assembler Language Programs publication for information
about interpreting the return code. Follow the recommended problem
resolution procedures indicated by the appropriate MVS Diagnosis book.
 Note: The ENQ was issued with the RET=USE parameter.

 If problem determination indicates that the MVS platform is in error, gather
all available documentation and report the error to the IBM® Software Support Center.

Module
 MVPMAIN

Procedure name
  Mainline
code