# When connection settings

Available in...

* Cloud API Services Platform
* Cloud Data Fabric
* Data Fabric
* Data Services Platform
* ESB
* MDM Platform
* Qlik Cloud Enterprise Edition
* Qlik Talend Cloud Enterprise Edition
* Qlik Talend Cloud Premium Edition
* Real-Time Big Data Platform

## About this task

You can set a When link to filter messages according to a condition and route those filtered messages:

## Procedure

1. Simply select the When link of your routing to display the related Basic settings view of the Components tab.
2. In the Type list, select the type of condition you want to use in the routing.
3. In the Condition field, type in the condition you want to use to filter your messages.

   ![Basic settings view.](https://help.qlik.com/talend/en-US/studio-user-guide/Resources/images/When_settings.png)

## Results

When executing your Route, messages matching the condition defined in the when link will be passed to the following component and messages not matching it can either be lost or retrieved via an otherwise link. For more information, see [Catch connection settings](https://help.qlik.com/talend/en-US/studio-user-guide/8.0/catch-connection-settings) and for a scenario using those links, see Talend Components documentation.