Not in policy plan (7)
I believe the answer is:
outline
'plan' is the definition.
(outline is a kind of plan)
'not in policy' is the wordplay.
'not in' becomes 'out' ('out' is the opposite to 'in').
'policy' becomes 'line' (I've seen this before).
'out'+'line'='OUTLINE'
(Other definitions for outline that I've seen before include "Framework" , "Sketch; general statement" , "Preliminary draft" , "Sketch, delineate" , "Sketch or contour" .)