# werkzeug.exceptions.RequestEntityTooLarge: 413 Request Entity Too Large

- **ID:** `python/flask-request-entity-too-large`
- **Domain:** python
- **Category:** runtime_error
- **Verification:** ai_generated
- **Fix Rate:** 80%

## Root Cause

The uploaded file or request body exceeds the configured MAX_CONTENT_LENGTH.

## Version Compatibility

| Version | Status | Introduced | Deprecated |
|---------|--------|------------|------------|
| 2.x | active | — | — |
| 3.x | active | — | — |

## Workarounds

1. **** (90% success)
   ```
   app.config['MAX_CONTENT_LENGTH'] = 16 * 1024 * 1024  # 16MB
   ```
2. **** (85% success)
   ```
   Handle file in chunks without loading into memory.
   ```

## Dead Ends

- **** — May cause memory issues and DoS vulnerability. (60% fail)
- **** — Removes protection against large payloads. (80% fail)