&ZVTAMPU

Returns the host PU name of VTAM.

If supported by the version of VTAM, the system variable &ZVTAMPU is set to the value of host PU name defined for this VTAM system. The value is as defined in the VTAM initialization parameters using the HOSTPU operand.

Example: &ZVTAMPU

&WRITE DATA=VTAM PUNAME=&ZVTAMPU

Note: If the level of VTAM in use does not support the provision of the host PU name this system variable will return a default value of 'ISTPUS'.