What does the cryptic crossword clue "Correct all items damaged in violent upheaval (10,5)" mean?

The wordplay uses an anagram. anagram of CORRECTALLITEMS ("Correct all items") [anagram: "damaged"] = ELECTRICALSTORM The answer is ELECTRICALSTORM.

Correct all items damaged in violent upheaval (10,5)

Guardian Cryptic #29264 | 7 Down | 2023-12-28 flower