# system.kanoa.operators.operatorLogout(sessionInfo, userId)

Logs an operator out of an asset by closing their open mes.operatorAssetSession row (the row where logoutTStamp IS NULL for this userId+assetId pair). There is no separate
operator identity - sessionInfo['userId'] is the sec.user being logged out, which can differ from the outer userId param (the actor performing this action, used for changedBy audit).

---
### Parameters
**sessionInfo** `Dictionary`<br />
<table class='dictionaryKeyTable'>
	<tbody>
 	<tr><td> - assetId</td><td>Integer</td><td></td></tr>	
 	<tr><td> - tStamp</td><td>String</td><td></td></tr>	
 	<tr><td> - userId</td><td>Integer</td><td>the sec.user being logged out</td></tr>	
	</tbody>
</table>

**userId** `Integer`: the actor performing this action (changedBy)<br />

---
### Returns
**rowsAffected** `Integer` records modified - 0 if the user had no open session on this asset, or on failure<br />
**message** `String` None on success, an error message on failure<br />

---
### Example
```python
sessionInfo = {'userId': 5,	'assetId': 4, 'tStamp': system.date.now()}
userId = 12
rowsAffected, message = system.kanoa.operators.operatorLogout(sessionInfo, userId)
```