"INTERNAL">WS_ADAPTER_SYS_ERROR

Hi Experts,

I am stuck with an error in WS adapter(Message protocol: WS 1.0)

The scenario is SOAP to WS(Third party to ECC) synchronous type.

Third party system <--> BizTalk <--> PI(7.31 dual stack) <--> SAP

In SXMB_MONI the error is

   <SAP:Code area="INTERNAL">WS_ADAPTER_SYS_ERROR</SAP:Code>

<SAP:P1/>

<SAP:P2/>

<SAP:P3/>

<SAP:P4/>

<SAP:AdditionalText/>

<SAP:Stack>System error while calling Web service adapter: Error when initializing SOAP client application: &#39;Error when initializing SOAP client application: &quot;SRT: Unexpected failure in SOAP processing occurre&quot;&#39;</SAP:Stack>

In Adapter Engine: message monitoring, the error is:

Transmitting the message using connection SOAP_http://sap.com/xi/XI/System failed, due to: com.sap.engine.interfaces.messaging.api.exception.MessagingException: XIServer:WS_ADAPTER_SYS_ERROR::::::System error while calling Web service adapter:
Error when initializing SOAP client application: &#39;Error when initializing SOAP client application: &quot;SRT: Unexpected failure in SOAP processing occurre&quot;&#39;

and the message is getting cancelled in Adapter engine.

Is this something like PI is not receiving the response from ECC system? or something went wrong in WS adapter. I am not authorized to check the messages in ECC.

I have checked WS adapter status in SOAMANAGER, the connection is working fine. Can you suggest where do can I check the WS adapter channel status and processed message logs on WS adapter?