modules/sms/repository/services/SampleService/META-INF/services.xml

<serviceGroup>
    <service name="SampleService">
        <description>Sample Service</description>
        <messageReceivers>
            
           <messageReceiver
                    mep="http://www.w3.org/ns/wsdl/in-out"
                    class="org.apache.axis2.transport.sms.SimpleInOutMessageReceiver"/>
        </messageReceivers>
        
       <operation name="SampleInOutOperation" mep="http://www.w3.org/ns/wsdl/in-out">
            <actionMapping>urn:SampleInOutOperation</actionMapping>
        </operation>
    </service>
</serviceGroup>
<serviceGroup>
    <service name="SampleService">
        <description>Sample Service</description>
        <messageReceivers>
            
           <messageReceiver
                    mep="http://www.w3.org/ns/wsdl/in-out"
                    class="org.apache.axis2.transport.sms.SimpleInOutMessageReceiver"/>
        </messageReceivers>
        
       <operation name="SampleInOutOperation" mep="http://www.w3.org/ns/wsdl/in-out">
            <actionMapping>urn:SampleInOutOperation</actionMapping>
        </operation>
    </service>
</serviceGroup>