Add device associated account interface
<p><strong>A brief description:</strong> </p>
<ul>
<li>The terminal account relationship associated with the device SN is used when the collector SN is not known, but the device SN is known, but there is a certain delay. The association relationship is not necessarily real-time, only when the device is online. It will be associated in real time. If the device is not online, it will be associated after the device is online.</li>
</ul>
<p><strong>Request URL:</strong></p>
<ul>
<li><code>http(s)://openapi-us.growatt.com/v1/device/sn/add</code></li>
</ul>
<p><strong>Request method:</strong></p>
<ul>
<li>post</li>
</ul>
<p><strong>Parameters:</strong></p>
<table>
<thead>
<tr>
<th style="text-align: left;">Parameter name</th>
<th style="text-align: left;">Required</th>
<th style="text-align: left;">Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td style="text-align: left;">plant_id</td>
<td style="text-align: left;">yes</td>
<td style="text-align: left;">int</td>
<td>plant_id</td>
</tr>
<tr>
<td style="text-align: left;">sn</td>
<td style="text-align: left;">Yes</td>
<td style="text-align: left;">string</td>
<td>Device SN</td>
</tr>
<tr>
<td style="text-align: left;">c_user_id</td>
<td style="text-align: left;">Yes</td>
<td style="text-align: left;">int</td>
<td>User ID</td>
</tr>
</tbody>
</table>
<p><strong>Back to example</strong></p>
<pre><code>{
&quot;error_code&quot;: 0,
&quot;error_msg&quot;: &quot;&quot;
}</code></pre>
<p><strong>Return parameter description</strong></p>
<table>
<thead>
<tr>
<th style="text-align: left;">parameter name</th>
<th style="text-align: left;">type</th>
<th>description</th>
</tr>
</thead>
<tbody>
<tr>
<td style="text-align: left;">error_code</td>
<td style="text-align: left;">string</td>
<td>0: Normal return; 10001: System error; 10002: The power station ID is empty or the device serial number is wrong; 10003: The device already exists; 10004: The power station does not exist; 10005: The user does not exist; 10006: The user ID is Empty; 10007: Collector serial number does not exist; 10010: Failed to add device</td>
</tr>
<tr>
<td style="text-align: left;">error_msg</td>
<td style="text-align: left;">string</td>
<td>Error message</td>
</tr>
</tbody>
</table>
<p><strong>Remark</strong></p>