I recently had the opportunity to review the new book BizTalk Mapping Patterns & Best Practices which is now released on the BizTalk 360 website. – Download it here
This is one of the most detailed books I have ever read and Sandro has put a slightly worrying amount of work into making this the bible for anyone using BizTalk maps. Sandro also has some excellent insights into this area.
There cant be many mapping problems out there which are not covered so get your copy asap. Oh its also free !!!