What does the cryptic crossword clue "Duo catch unit that's disrupted a method of selling (5,7)" mean?

The wordplay uses an anagram. anagram of DUO + CATCH + UNIT = DUTCHAUCTION The answer is DUTCHAUCTION.

Duo catch unit that's disrupted a method of selling (5,7)

Daily Mail Cryptic #17057 | 7 Down | 2023-03-20 flower