HP DCE/9000 Version 1.7 for HP-UX 11.0 Release Note

HP DCE 1.7 for HP-UX 11.0 Release Note 35
Compatibility Information and Installation Requirements
HP DCE/9000 Version 1.7 Installation Requirements
NOTE HP DCE 1.7 does not support direct migration from versions of HP DCE
that run on HP-UX 9.x (HP DCE 1.2, 1.2.1, and 1.4.2). However, you can
migrate from those versions of HP DCE by migrating first to HP DCE 1.4
on HP-UX 10.01 and then migrating to HP DCE 1.7 on HP-UX 11.0.