Z Abend Investigator uses a subsystem known as HFZS for services that can otherwise not be performed or which might cause incomplete analysis if not started.
Z Abend Investigator requires at least one PDS or PDSE data set to be allocated as a fault history file.
The HFZUTIL batch utility can be used to perform history file management functions, such as listing and deleting history file fault entries.
HCL Z Abend Investigator on VS Code is an optional feature.