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501
Not Implemented
The server does not support the functionality required to fulfill the request.
Common Causes
- •Unsupported HTTP method
- •Feature not implemented
- •Method not recognized
Fix Solutions
Check supported methods
Use OPTIONS request to discover supported methods.
Code Examples
// Express.js - Not implemented
app.all('/api/feature', (req, res) => {
res.status(501).json({
error: 'Feature not implemented yet'
});
});