From Steve Newhouse:

[I am trying to kick start the tracker process using the minutes form 2006-04-19.]

This has discussed several times in the past and has appeared and 
disappeared from the BES specification - currently out - as BES probably 
thought it could go into JSDL. The JSDL gurus at the F2F felt that this 
did not belong in the JSDL document itself (their argument - it has 
nothing to do with describing the job) but sat within the message body of 
the create activity (or equivalent) operation. 
There was some discussion at the F2F about the failure semantics of the 
lower-level layers (beneath the webs ervice) that should be included here. 
[Expansion of the WS-Addressing comment on ESI page 3 would be welcome.] .