Unknown outbound adapter (name = SOAP)

Hi folks,

I am working on a PROXY --> PI --> SOAP scenario. I get this error in PI'S SXMB_MONI. How to resolve this issue and what is causing it?

<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>

<!--  Call Adapter  -->

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

  <SAP:Category>XIServer</SAP:Category>

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

  <SAP:P1>SOAP</SAP:P1>

  <SAP:P2>PLSRV_CALL_ADAPTER</SAP:P2>

  <SAP:P3 />

  <SAP:P4 />

  <SAP:AdditionalText />

  <SAP:ApplicationFaultMessage namespace="" />

  <SAP:Stack>Unknown outbound adapter (name = SOAP)</SAP:Stack>

  <SAP:Retry>M</SAP:Retry>

  </SAP:Error>

Your help is very much appreciated.

Regards,

Adil Khalil