Goal of this ticket is something like callouts for standard windows. There is no other feature which can set value of some field after dependent field is changed. Dynamic Validation can filter list values, but can't chose default value from list...

Issue is in state of idea, proper design has to be discussed.

Google topic: https://groups.google.com/forum/?utm_medium=email&utm_source=footer#!topic/idempiere/TWbb6HSMm7s