VTAM® issues this message in response to the first VARY ACTIVATE command for an Enterprise Extender (HPR/IP) link or in response to a DISPLAY ID command for an external communication adapter (XCA) major node that defines an Enterprise Extender (HPR/IP) connection.

VTAM also issues this message as part a message group in response to a DISPLAY EE command. This message group begins with message IST2000I. See the explanation of that message for a complete description.

jobname is the 1-8 character TCP/IP job name used to start the TCP/IP address space. When using HPR over IP, VTAM acts as a TCP/IP application. Consequently, VTAM must know the job name of TCP/IP. See the z/OS Communications Server: IP Configuration Guide for information about the TCP/IP job name.