# django.core.exceptions.FieldError: Unknown field(s) (age) specified for User

- **ID:** `python/django-field-error-unknown`
- **Domain:** python
- **Category:** data_error
- **Verification:** ai_generated
- **Fix Rate:** 80%

## Root Cause

Trying to query or filter on a field that does not exist in the model.

## Version Compatibility

| Version | Status | Introduced | Deprecated |
|---------|--------|------------|------------|
| 3.x | active | — | — |

## Workarounds

1. **Check model definition for correct field names** (95% success)
   ```
   In models.py, ensure the field is defined: age = models.IntegerField()
   ```
2. **Use model's meta to list fields** (90% success)
   ```
   User._meta.get_fields() to see available fields.
   ```

## Dead Ends

- **Assuming the field exists in the database** — Field must be defined in the model class. (90% fail)
- **Using incorrect field name spelling** — Even minor typos cause this error. (80% fail)