- **Phone Error**: Phone has been registered.
- **Email Error**: Email has been registered.
- **Username Error**: 
- **Account Enter Error**: 
- **Code Error**: 
- **Username error**: Username maximum 18 characters.
- **Password Policy**: The password should be 8-20 digits and must contain numbers, letters and special symbols. The letters are case sensitive.
- **Password Match Error**: Two input passwords do not match.