Access Role in source/destination column with "Redirect to Captive Portal" as an action on the Accept column causes policy verification to fail, but policy installation finishes successfully.
FWM debug for verification shows that the role is marked as an "identity_role":
[FWM PID...]@Host[DATE TIME] objectFromUid: fwset%gt;this = 0xdf538e40, count = 3<
(TestAD
:AdminInfo (
:chkpf_uid ("{04E6A97D-65EF-44A9-90F4-9E487BE71370}")
:ClassName (identity_role)
:global_level (0)
:table (identity_roles)
:LastModified (
:Time ("Sun Jun 7 04:09:56 2020")
:last_modified_utc (1591499396)
:By (System)
:From (localhost)
)
:name (TestAD)
)
:type (identity_role)
...