# Common Helper: BusinessException

Domain exception type with catalog of business error codes (`ExceptionEnum`).

## Error Codes
| Code | Value | Message |
|------|-------|---------|
| NoEmailFound | 10 | No such email found |
| EmailExists | 20 | Email already exists |
| WrongPassword | 30 | Passwords do not match |
| PasswordLengthIncorrect | 32 | Password should be at least 8 characters |
| EmailLengthIncorrect | 35 | Email is empty or invalid |
| WrongEmail | 37 | (no description) |
| HardwareIdMismatch | 40 | Hardware mismatch |
| BadHardware | 45 | Hardware should be not empty |
| WrongResourceName | 50 | Wrong resource file name |
| NoFileProvided | 60 | No file provided |

## Consumers
| Component | Usage |
|-----------|-------|
| User Management | Throws for auth/validation errors |
| Resource Management | Throws for missing files |
| Admin API | BusinessExceptionHandler catches and serializes |
| Request Validators | Reference error codes in `.WithErrorCode()` |