There was a failure executing the receive pipeline: Reason: Unexpected event ("eos") in state "processing_header"

Error found in Application Event Log:

Event Type: Error
Event Source: BizTalk Server 2006
Event Category: BizTalk Server 2006
Event ID: 5719
Date: 8/26/2009
Time: 4:00:45 AM
User: N/A
Computer: CTOR-UBIZTALK01
Description:
There was a failure executing the receive pipeline: "Microsoft.BizTalk.DefaultPipelines.XMLReceive, Microsoft.BizTalk.DefaultPipelines, Version=3.0.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" Source: "XML disassembler" Receive Port: "RP_ArielBPM_WF_Process_Input_Msg_UAT" URI: "FORMATNAME:DIRECT=OS:CTOR-UBIZTALK\ARIELBPM_WORKFLOW_UAT" Reason: Unexpected event ("eos") in state "processing_header".

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.

---

Reason:

The following message was submitted to the queue:

<LossOfCoverageRequests xmlns="http://ArielBPM.Biztalk.RequestManagement.Schemas"
xmlns:i="http://www.w3.org/2001/XMLSchema-instance" />

---

The envelop schema definition of the message type expecting:

<xs:schema xmlns:tns="http://ArielBPM.Biztalk.RequestManagement.Schemas" xmlns:b="http://schemas.microsoft.com/BizTalk/2003" elementFormDefault="qualified" targetNamespace="http://ArielBPM.Biztalk.RequestManagement.Schemas" xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:annotation>
<xs:appinfo>
<schemaInfo is_envelope="yes" root_reference="LossOfCoverageRequests" xmlns="http://schemas.microsoft.com/BizTalk/2003" />
</xs:appinfo>
</xs:annotation>
<xs:element name="LossOfCoverageRequests" type="tns:LossOfCoverageRequests">
<xs:annotation>
<xs:appinfo>
<recordInfo body_xpath="/*[local-name()='LossOfCoverageRequests' and namespace-uri()='http://ArielBPM.Biztalk.RequestManagement.Schemas']" xmlns="http://schemas.microsoft.com/BizTalk/2003" />
</xs:appinfo>
</xs:annotation>
</xs:element>
<xs:complexType name="LossOfCoverageRequests">
<xs:sequence>
<xs:any />
</xs:sequence>
</xs:complexType>
</xs:schema>