An interesting article by Karen Lopez – Enterprise Data Modeling 7 Mistakes You Can’t Afford to Make. Definitely worth taking a look at.
The first one ‘Forgetting that an enterprise architecture is a living framework’ – not viewing ‘data architecture as a final, fixed deliverable’ particular resonates with me at the moment.
A mistake I would add to the list is along the lines of ‘Getting too bogged down in detail’.
There is definitely a sweet spot in getting just enough level of detail to make the enterprise model useful to it’s intended audience (or should that be audiences?) whilst not swamping it and making it a ‘boil the ocean’ type process to create and maintain.
There must be a couple more to make it to 10?