Why is message DBO0009I ENVIRONMENTAL PARAMETERS: NOT APF AUTH issued when DBO runs in IBM compatibility mode,
even if the STEPLIB concatenation is APF-authorized?
DBO runs unauthorized in IBM compatibility mode because the IMS region controller, DFSRRC00, sheds authorization before linking
to the DFSURGU0 utility module, which DBO front ends to receive control. DBO will still run authorized in native mode if the STEPLIB
concatenation has been APF authorized.