Receiver SOAP AXIS Error

Hello friends,

I am working on a synchronous RFC-> WS Scenario.

We are using certificates, which are alredy installed on the server.

I am facing the below error:

<SAP:Error
xmlns:SAP="http://sap.com/xi/XI/Message/30" xmlns:SOAP="http://schemas.xmlsoap.org/soap/envelope/" SOAP:mustUnderstand="1">

In communication Channel:

Delivery of the message to the application using
connection SOAP_http://sap.com/xi/XI/System failed, due to:
com.sap.aii.af.ra.ms.api.RecoverableException: handler is not instantiated:
org.apache.axis.ConfigurationException: handler is not instantiated
org.apache.axis.ConfigurationException: handler is not instantiated at
com.sap.aii.adapter.axis.modules.HandlerCore.process(HandlerCore.java:69) at
com.sap.aii.adapter.axis.modules.HandlerBean.process(HandlerBean.java:88) at
com.sap.aii.af.mp.module.SModuleLocalLocalObjectImpl0_0.process(SModuleLocalLocalObjectImpl0_0.java:175)
at
com.sap.aii.af.mp.ejb.ModuleProcessorBean.process(ModuleProcessorBean.java:292)
at
com.sap.aii.af.mp.processor.ModuleProcessorLocalLocalObjectImpl0_0.process(ModuleProcessorLocalLocalObjectImpl0_0.java:103)
at com.sap.aii.af.listener.AFWListenerBean.onMessage(AFWListenerBean.java:343)
at
com.sap.aii.af.listener.AFWListenerLocalObjectImpl0_0.onMessage(AFWListenerLocalObjectImpl0_0.java:103)
at com.sap.aii.af.ra.ms.impl.ServicesImpl.deliver(ServicesImpl.java:276) at
com.sap.aii.adapter.xi.ms.XIEventHandler.onDeliver(XIEventHandler.java:1074) at
com.sap.aii.af.ra.ms.impl.core.queue.consumer.RequestConsumer.onMessage(RequestConsumer.java:118)
at com.sap.aii.af.ra.ms.impl.core.queue.Queue.run(Queue.java:917) at
com.sap.aii.af.ra.ms.runtime.MSWorkWrapper.run(MSWorkWrapper.java:56) at
com.sap.engine.core.thread.impl3.ActionObject.run(ActionObject.java:37) at
java.security.AccessController.doPrivileged(Native Method) at
com.sap.engine.core.thread.impl3.SingleThread.execute(SingleThread.java:104) at
com.sap.engine.core.thread.impl3.SingleThread.run(SingleThread.java:176) .
Setting message to status failed.

Kindly help.

Regards,

Pooja