Unable to use a custom data format id in the dataformat producer endpoint

Issue

Unable to use a custom data format id in the dataformat producer endpoint due to org.apache.camel.FailedToCreateRouteException.

camel route

<camelContext id="camel-context" xmlns="http://camel.apache.org/schema/spring" streamCache="true">
    <dataFormats>
        <json id="json1" library="Jackson" unmarshalTypeName="com.sample.Request" />
    </dataFormats>

    <route id="test">
        <from uri="direct:test" />
        <to uri="dataformat:json1:unmarshal"></to>
    </route>
</camelContext>

error

org.apache.camel.RuntimeCamelException: org.apache.camel.FailedToCreateRouteException: Failed to create route test at: >>> To[dataformat:json1:unmarshal] <<< in route: Route(test)[[From[direct:test]] -> [To[dataformat:json1:unma... because of Failed to resolve endpoint: dataformat://json1:unmarshal due to: Cannot find data format with name: json1