SOA Composite Error "The <from> value is invalid" When Testing A Webservice (Doc ID 2456247.1)

[2018-09-12T11:50:56.996-04:00] [soa_server1] [ERROR] [] [oracle.soa.bpel.system] [tid: [ACTIVE].ExecuteThread: '54' for queue: 'weblogic.kernel.Default (self-tuning)'] [userId: ] [ecid: b4348f5b-2e14-42c6-xxxx-47f1e6adb1e9-xxxxxxee,0:2] [APP: soa-infra] [partition-name: DOMAIN] [tenant-name: GLOBAL] [J2EE_APP.name: soa-infra] [J2EE_MODULE.name: fabric] [WEBSERVICE.name: xxxxxxxxx] [WEBSERVICE_PORT.name:xxxxxxxx] [oracle.soa.tracking.FlowId: 130002] [oracle.soa.tracking.InstanceId: 130005] [oracle.soa.tracking.SCAEntityId: XXXXXX] [oracle.soa.tracking.FaultId: 90001] [composite_name: xxxxxxxxx!1.0] [FlowId: 0000MNEUxxxxxxxx8DyW1RaJ6xxxxxx] Unhandled BPELFault:faultName: {{http://schemas.xmlsoap.org/ws/2003/03/business-process/}selectionFailure}[[
messageType: {{http://schemas.oracle.com/bpel/extension}RuntimeFaultMessage}
parts: {{
summary=The <from> value is invalid.
The result of from-spec is null.
Either the from node value or the xpath query in the from node value was invalid.
According to BPEL4WS spec 1.1 section 14.3, the from node value should not be empty. Verify the from node value at line number 199 in the BPEL source.

,activity=130005-XXXXX11-XXXXX2.10-2
,payload=
<XXXXXXXXXXResponse xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:ns1="http://xxxxxxxx.xxxxxxxx.com/xxxxxxxxx/xxxxxxxx" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><ns2:requestNumber xmlns:ns2="http://xxxxxxxx.xxxxxxx.com/XXX">52252014</ns2:requestNumber><ns2:XXXXXXXX xmlns:ns2="http://xxxxxxxxx.xxxxxxx.com/XXX">-1</ns2:XXXXXXXX><ns2:outputMessages xmlns:ns2="http://xxxxxxxx.xxxxxxx.com/XXX">