# werkzeug.routing.exceptions.NoMatchFound: 404 Not Found: The requested URL was not found on the server.

- **ID:** `python/flask-url-map-endpoint-not-found`
- **Domain:** python
- **Category:** config_error
- **Verification:** ai_generated
- **Fix Rate:** 80%

## Root Cause

The route is not registered (blueprint not registered, typo in path, or app not receiving the request due to wrong `APPLICATION_ROOT`).

## Version Compatibility

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

## Workarounds

1. **** (96% success)
   ```
   from app.routes import bp
app.register_blueprint(bp, url_prefix='/api')
   ```
2. **** (95% success)
   ```
   print(app.url_map)
   ```

## Dead Ends

- **** — Hides misconfiguration; real route still missing. (85% fail)
- **** — Host matching only; doesn't register routes. (90% fail)