--- title: Check Nothing description: A template that carries no data, useful for testing. location: https://istio.io/docs/reference/config/policy-and-telemetry/templates/checknothing.html layout: protoc-gen-docs generator: protoc-gen-docs aliases: - /docs/reference/config/template/checknothing.html number_of_entries: 1 ---

The `checknothing` template represents an empty block of data, which can useful in different testing scenarios.

Example config:

    apiVersion: "config.istio.io/v1alpha2"
    kind: checknothing
    metadata:
      name: denyrequest
      namespace: istio-system
    spec:

## Template

CheckNothing represents an empty block of data that is used for Check-capable adapters which don’t require any parameters. This is primarily intended for testing scenarios.