---
# System prepended metadata

title: Untitled

---


<table>
	<thead>
		<tr>
		<td>Use Case</td>
	    <td>Example</td>
		</tr>
	</thead>
	<tbody>
		<tr>
			<td>
Value must be specified
			</td>
			<td>
<pre>
#@schema/validation min_len=1
username: ""
</pre>
			</td>
		</tr>
		<tr>
			<td>
			</td>
			<td>
			</td>
		</tr>
	</tbody>
</table>
