# pydantic.error_wrappers.ValidationError: 1 validation error for Model
field
  Field required [type=missing, input_value={}, input_type=dict]

- **ID:** `python/pydantic-required-field-missing`
- **Domain:** python
- **Category:** data_error
- **Verification:** ai_generated
- **Fix Rate:** 80%

## Root Cause

A field without a default value is not provided during model instantiation, causing a missing field error.

## Version Compatibility

| Version | Status | Introduced | Deprecated |
|---------|--------|------------|------------|
| 2.x | active | — | — |

## Workarounds

1. **** (100% success)
   ```
   Provide the field during instantiation: Model(field='value')
   ```
2. **** (95% success)
   ```
   Add a default value: field: str = 'default'
   ```

## Dead Ends

- **** — Setting default=None makes field optional, but if None is not valid for the type, it may still fail. (50% fail)
- **** — model_construct skips validation but may leave fields unset, causing issues later. (80% fail)