Are DSN3@ATH and DSN3@SGN load modules downward compatible for z/OS versions?
Release : 16.0
z/OS version doesn't matter in terms of downward compatibility, however if ACF2 maintenance is applied that contains PTF LU00294 (PEed and corrected by LU02957), re-relink of DSN3@ATH & DSN3@SGN exits with CSECT SAFFBSC6 is required as LU00294 includes an updated version of ACF00SSL and SAFFBSC6 modules.
LU03786 - Provides updated link instructions for DB2 exits after LU00294
DSN3@ATH & DSN3@SGN load modules containing CSECT SAFFBSC6 would not be compatible with an ACF2 system without LU00294.