Give inaccurate report indicating that they will not be present at exhibition venue (8)
I believe the answer is:
misstate
'give inaccurate report indicating that they will not' is the definition.
The definition and answer are not the same part of speech.
'present at exhibition venue' is the wordplay.
'present' becomes 'state' (I've seen this in another clue).
'at' is a charade indicator (letters next to each other) (I've seen this in other clues).
'exhibition venue' becomes 'mis' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'state' after 'mis' is 'MISSTATE'.
'be' is the link.
Can you help me to learn more?
(Other definitions for misstate that I've seen before include "Give inaccurate info" , "Wrongly announce" , "Inaccurately report" , "Mast site (anag.)" , "Declare wrongly" .)