Bowls data is wrong (6)
I believe the answer is:
stadia
'bowls' is the definition.
('stadium' can be a synonym of 'bowl')
'data is wrong' is the wordplay.
'wrong' indicates anagramming the letters.
'data'+'is'='datais'
'datais' anagrammed gives 'STADIA'.
(Other definitions for stadia that I've seen before include "Large sports venues" , "Bowls" , "Big venues" , "Sports arenas" , "large arenas" .)