This report from auditor’s going all the way to the top? (5-2)

I believe the answer is:

write-up

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'this report' is the definition.
(synonyms)

I don't understand the rest of the clue.

(Other definitions for write-up that I've seen before include "Document (one's results)" , "Report (of an event)" , "Report, account" , "Pure wit (anag.)" , "Describe fully" .)

I've seen this clue in The Times.

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