Installing the MVS change options/suppress dump exit HFZXDCAP

HFZXDCAP is installed as a IEAVTABX_EXIT dynamic exit routine by including the following in a PARMLIB PROGxx member, which is automatically selected at IPL time:
EXIT ADD EXITNAME(IEAVTABX_EXIT) MODNAME(HFZXDCAP)
To activate the HFZXDCAP exit before the next IPL, issue the following operator command, where xx matches the suffix used on the PARMLIB PROGxx member:
SET PROG=xx