Summary showing unacceptable range (7)
I believe the answer is:
outline
'summary' is the definition.
(I know that outline is a type of summary)
'unacceptable range' is the wordplay.
'unacceptable' becomes 'out' (I've seen this before).
'range' becomes 'line' (I've seen this in other clues).
'out'+'line'='OUTLINE'
'showing' is the link.
(Other definitions for outline that I've seen before include "Give a summary of" , "Synopsis -- silhouette" , "Framework" , "Give a rough idea" , "General plan; sketch" .)