It's a violation of...

Meaning

It breaks or disregards...

Examples

• John: He entered the competition again after being disqualified.
• Alice: But that's against the rules! <b>It's a violation of</b> the competition guidelines.
• John: Yes, and they should take appropriate action.
• Alice: Absolutely. This repeated breach is clearly <b>a violation of</b> fair play and the rules must be upheld.