Hi all,
I managed to succeed the certification last May on the 1rst try. I'm quite happy with not only the result but also thing I've archived in doing this certification.
I'm sorry for my late feedback, for not answering some PMs ... because very often I feel difficult to share something. I'm afraid of violating certification rules, so I'll try to avoid concrete things.
Making assumptions, well I also followed advises I found in this forum, should come first. There can be no limit if these assumptions don't make you resolve an easier problem and if you give reasons in making them (like any other decisions in the project ...). You know, without assumptions (at least in this assignment), you cannot see clearly thing you have to resolve.
One more point is about use cases. They are very important and everyone (architects, developers, ..) must respect because they describe how end users work with our final system.
Hope this can help, though just a little.
Daniel.