# message type filter

In the Node configuration, administrator defines set of allowed Message Types for incoming Message. There are [predefined Message Types](https://docs.tesenso.com/tesenso-iot-cloud/rule-engine/rule-engine/predefined-message-types) in the system, like **Post attributes**, **Post telemetry**, **RPC Request**, etc. An administrator can also define any Custom Message Types in the node configuration.

![image](https://thingsboard.io/images/user-guide/rule-engine-2-0/nodes/filter-message-type-config.png)

If incoming Message Type is expected - Message is sent via **True** chain, otherwise **False** chain is used.

![](https://111806075-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-Mg4otljWU9FsHKYhTsW%2Fuploads%2FigcWvzuDSpL01gU7N4pP%2Fimage.png?alt=media\&token=088fa116-1873-4aed-8b4a-3e6d22ffe31e)

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