What does the cryptic crossword clue "Stock controller ordered a brace to be refitted (3,4,6)" mean?

The wordplay uses an anagram. anagram of ORDERED + A + BRACE = BARCODEREADER The answer is BARCODEREADER.

Stock controller ordered a brace to be refitted (3,4,6)

Daily Mail Cryptic #16924 | 15 Across | 2022-09-14 flower