GSVI Sysview CICS transaction, is not visible in CICS (CEMT I TASK) or via the CPSM WUI.
It is only visible on SYSVIEW displays.
Release : 15.0
Component : SYSVIEW
SYSVIEW intentionally marks the GSVI transaction as a SYSTEM task. Since it is a monitor and can be responsible for canceling transactions, etc., having it be a system task makes SYSVIEW for CICS less susceptible to cancellation itself from 'external' sources such as other CICS monitors.
CEMT I TASK only displays user tasks, which is why GSVI doesn't appear there.
There are no plans to change this.