I break van cover, making it void (7)

I believe the answer is:

invalid

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'void' is the definition.
(similar in meaning)

'i break van cover' is the wordplay.
'break' is an anagram indicator.
'cover' becomes 'lid' (lid is a kind of cover).
'van' with letters rearranged gives 'nva'.
'i'+'nva'+'lid'='INVALID'

'making it' acts as a link.
I am not very happy about this link. Some or all of it may be part of another bit of the clue.

Can you help me to learn more?

(Other definitions for invalid that I've seen before include "One disabled by illness" , "Not true" , "Void; patient" , "Not telling" , "lacking legal authority" .)

I've seen this clue in The Mirror.

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