FaultHandlingAssignMessagePolicy

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<AssignMessage async="false" continueOnError="false" enabled="true" name="invalid-key-message">
    <DisplayName>Invalid key message</DisplayName>
    <Set>
        <Payload contentType="application/json">{"Error": "App Key Invlaid","Code":"401","ErrorTitle":"Incorrect Key Value passed.","DeveloperMessage":"The Appkey passed in the query param is either ooutdated or is not proper please validate with original product key."}</Payload>
        <StatusCode>422</StatusCode>
        <ReasonPhrase>Unprocessable Entity</ReasonPhrase>
    </Set>
    <Add>
        <Headers>
            <Header name="invalidKey">Invalid API key!</Header>
        </Headers>
    </Add>
    <IgnoreUnresolvedVariables>true</IgnoreUnresolvedVariables>
    <AssignTo createNew="false" transport="http" type="request"/>
</AssignMessage>