GENPKGID is not being invoked when defining a package from IBM ENDEVOR PACKAGE RAM running under IDZ.
ENCOPTBL option is active ENHOPT ALWAYS_CALL_GENPKGID=ON.
Release : 18.1
Component : Endevor Software Change Manager
This is an enhancement request already addressed to IBM.
Please see: "Support Genpkgid in Endevor Package RAM"