Here are the 21 rule breaches:

There are supposed to be 21. I’ve only found 20.

In the clues (1112):
11A, 12A, 19A, 22A, 24A, 29A,
1D, 3D, 4D, 5D, 18D, 21D

In the answers (9):
1A, 19A,
2D, 4D, 8D, 16D, 18D, 20D, 23D