1. Failing to Appear in Court: In most states, if you are on probation and fail to appear for a court date, it is considered a violation of the terms of your probation. Depending on the state and circumstances, this could result in an arrest warrant being issued or additional charges being filed against you.

2. Possession or Use of Drugs or Alcohol: Most states have strict rules about drug and alcohol use by someone on probation. Even if you have permission from your probation officer for occasional drinking or recreational drug use, if you get caught using drugs or alcohol without permission, it can be considered a violation of your probation.

3. Committing Another Crime: If you commit a crime while on probation, it will almost always be considered a violation. Depending on the state, this could result in an additional criminal charge being filed against you or harsher penalties for your existing charges.

4. Failing to Abide By Curfew: Most people under probation are expected to abide by specific curfews during their probationary period. If you fail to do so without prior written permission from your probation officer, it is considered a violation and can lead to more severe consequences.

5. Not Completing Your Community Service: If you were sentenced to community service as part of your sentence while on probation, failing to complete that requirement can be taken as a violation of your terms and may lead to an arrest.

6. Failing to Maintain Contact With Your Probation Officer: In most states, probationers are required to stay in contact with their probation officer or risk being charged with violating the terms of their probation. This can include missing meetings or not providing them with the requested paperwork.

7. Moving Without Notifying Your Probation Officer: If you are planning on moving, it is important that you inform your probation officer ahead of time, or else you may be considered in violation of the terms of your probation.

8. Possessing a Firearm: Depending on the state, having a firearm while on probation can result in serious charges being filed against you, so proceed with caution and make sure you know the laws in your area.

9. Failing to Comply With Your Treatment Program: If you have a court-ordered treatment program (such as anger management or drug rehab) that you must complete while on probation, failure to comply with its requirements can also be considered a violation and could result in harsher penalties.

10. Traveling Out of State Without Permission: Many states require their probationers to get written permission from their probation officer before traveling out of state, so make sure you check with your PO first or risk being charged with a violation.

If you think you may have violated the terms of your probation, it is important to consult an experienced criminal defense lawyer immediately. Your lawyer can help you understand your state’s specific laws and regulations and what violations could mean for you. They can also work with you to avoid harsher penalties or drop the charges altogether. Don’t wait until it’s too late – contact a criminal defense lawyer today!