What does the cryptic crossword clue "Claim noisy rooms disrupted major national inquiry (5,10)" mean?

The wordplay uses an anagram. anagram of CLAIM + NOISY + ROOMS = ROYALCOMMISSION The answer is ROYALCOMMISSION.

Claim noisy rooms disrupted major national inquiry (5,10)

Daily Mail Cryptic #17314 | 6 Down | 2024-03-14 flower