- Bullying or racism
- In-game chat messages with double meaning that includes sensuality or
- Rude, harsh or aggressive in-game messages
- Messages that tells people to do a thing that can hurt them (example: Tell them to kill themselfes)
Trash talk is allowed though, sometimes.
Example of acceptable trash talk:
That was really bad aim. Get good and then come back to see if you got better.
Most of these info were taken from the Xbox Community Standards.