Schedule one can track after time (9)
I believe the answer is:
itinerary
'schedule' is the definition.
(I've seen this before)
'one can track after time' is the wordplay.
I cannot quite see how this works, but
'one' could be 'i' (Roman numeral) and 'i' is found in the answer.
'can' could be 'tin' ('tin' can be a synonym of 'can') and 'tin' is present in the answer.
'track' could be 'ry' and 'ry' is present in the answer.
'time' could be 'era' (I've seen this before) and 'era' is found within the answer.
No letters remain.
This explanation may well be incorrect...
(Other definitions for itinerary that I've seen before include "Tiny airer? (anagram)" , "schedule" , "Proposed route of travel" , "Travel plan" , "Planned journey" .)