Create Custom Entity record using MS BTS 2006 adapter for MS CRM 4.0.

HI ,
I am working on CRM record creation using MS BTS 2006 adapter for MS CRM 4.0.
I am able to create records for customizable entities [e.g. Account, contact]. But I am getting an error when trying to create records for custom entities.
I
also tried creating custom entity records using CRM web client as well
as by windows application using web services. And it’s working with it.
I am getting an error when using BTS adapter as :
 
Uncaught
exception (see the ‘inner exception’ below) has suspended an instance
of service
‘BTS_Imports.Orchestration_3(e66520ec-cf1e-85d6-f555-3e682fa807c4)’.
The service instance will remain suspended until administratively resumed or terminated.
If resumed the instance will continue from its last persisted state and may re-throw the same unexpected exception.
InstanceId: cdf5eba7-c431-4256-ab65-61074ce62313
Shape name:
ShapeId:
Exception thrown from: segment -1, progress -1
Inner exception: An error occurred while processing the message, refer to the details section for more information
Message ID: {502907CF-34BC-4794-864F-15B9D1A8F957}
Instance ID: {C780ADA4-B411-4C36-AC7B-846AF059EC1A}
Error Description: There is an error in the XML document.
 
       
Exception type: XlangSoapException
Source: Microsoft.XLANGs.BizTalk.Engine
Target Site: Void VerifyTransport(Microsoft.XLANGs.Core.Envelope, Int32, Microsoft.XLANGs.Core.Context)
The following is a stack trace that identifies the location where the exception occured
 
   at Microsoft.BizTalk.XLANGs.BTXEngine.BTXPortBase.VerifyTransport(Envelope env, Int32 operationId, Context ctx)
   at Microsoft.XLANGs.Core.Subscription.Receive(Segment s, Context ctx, Envelope& env, Boolean topOnly)
  
at Microsoft.XLANGs.Core.PortBase.GetMessageId(Subscription
subscription, Segment currentSegment, Context cxt, Envelope& env,
CachedObject location)
   at BTS_Imports.Orchestration_3.segment1(StopConditions stopOn)
   at Microsoft.XLANGs.Core.SegmentScheduler.RunASegment(Segment s, StopConditions stopCond, Exception& exp)
 
 
 
Thanks in advance and appreciate all your help.
 
Thanks,
Kuldip