Hi Roberto
First check if the workflow started or not - check SWI6 - give the BO, Trip key and check if any workflow exists or not
If yes, check if there is any error in the WF
If not triggered, check event trace SWEL (first make sure it is switched on, SWELS- then save a trip). See if the triggering evet is triggered or not or are there any errors
regards,
Modak