This is quite a good KB from the boys at Blackberry, it details the sequence of events that occurs in each component of the BlackBerry Enterprise Server during wireless enterprise activation is outlined below. The details include the lines that are written to the respective debug logs of each component.
http://www.blackberry.com/btsc/dynamickc.do?externalId=KB04566&sliceId=SAL_Public&command=show&forward=nonthreadedKC&kcId=KB04566
RIM seems to have a hard time creating a single KB article that explains anything completely so they have lots of articles that are really parts of the whole.
One article that goes really well with this one is:
http://www.blackberry.com/btsc/dynamickc.do?externalId=KB13850&sliceId=SAL_Public&command=show&forward=nonthreadedKC&kcId=KB13850
or in my preferred format:
http://www.blackberry.com/btsc/articles/318/KB13850_f.SAL_Public.html