what should happen if service and binding.ws require different soap version?

[Gilbert Kwan]

I defined a service requires soap.1_2

<component name="BComponentSOAP12">
  <implementation.java class="....BServiceSOAP12Impl"/>
    <service name="BServiceSOAP12">
      <interface.java interface="....BServiceSOAP12"/>
      <binding.ws requires="soap.1_2"/>
    </service>
</component>

and a reference by ws binding which requires soap.1_1

<component name="AComponent15">
  <implementation.java class="....AServiceImpl"/>
    <reference name="b1" target="BComponentSOAP12/BServiceSOAP12">
      <interface.java interface="..BServiceSOAP12"/>
      <binding.ws requires="soap.1_1"
uri="http://localhost:8080/BComponentSOAP12"/>
    </reference>
</component>

I got no warning, error message, or exception. Is it fine?
What is the proper behaviour of this scenario?

Thanks
Gilbert