This has been delivered in ZMF8.3 CR 131927 covers this idea.
Duplicate Components in same CMN Release - but different packages - should be reported in TestArea - even if no Checkin is done yet.
We had the case - where 2 programmes have create a new component with the same name - but in different application-packages (and different applications).
The more often case isĀ - that the same component is in different packages of the same application.
The problem was - that ERO TestArea does only report this - after the first has finished the work - and went to Area Checkin.
I would be much better, if ERO TestArea could already report duplicate components in different packages - as early detection. To solve this problem later - is always more effort.