Here is a very handy list of promoted context properties and their name spaces that I found on Stephen Kaufman's WebLog.

Receive Side

 1.  ReceivedFileName (http://schemas.microsoft.com/BizTalk/2003/file-properties)

 2.  InboundTransportLocation (http://schemas.microsoft.com/BizTalk/2003/system-properties)

 3.  InterchangeID (http://schemas.microsoft.com/BizTalk/2003/system-properties)

 4.  ReceivePortID (http://schemas.microsoft.com/BizTalk/2003/system-properties)

 5.  ReceivePortName (http://schemas.microsoft.com/BizTalk/2003/system-properties)

 6.  WasSolicitResponse (http://schemas.microsoft.com/BizTalk/2003/system-properties)

 7.  AuthenticationRequiredOnReceivePort (http://schemas.microsoft.com/BizTalk/2003/system-properties)

 8.  InboundTransportType (http://schemas.microsoft.com/BizTalk/2003/system-properties)

 9.  LRPMsgBodyTracking (http://schemas.microsoft.com/BizTalk/2003/system-properties)

10. MessageExchangePattern (http://schemas.microsoft.com/BizTalk/2003/system-properties)

11. PortName (http://schemas.microsoft.com/BizTalk/2003/messagetracking-properties)

12. ReceivePipelineID (http://schemas.microsoft.com/BizTalk/2003/system-properties)

13. MessageType (http://schemas.microsoft.com/BizTalk/2003/system-properties)

14. SchemaStrongName (http://schemas.microsoft.com/BizTalk/2003/system-properties)

 

Send Side

1.  CopyMode (http://schemas.microsoft.com/BizTalk/2003/file-properties)

2.  LTPMsgBodyTracking (http://schemas.microsoft.com/BizTalk/2003/system-properties)

3.  ReceivedFileName (http://schemas.microsoft.com/BizTalk/2003/file-properties)

4.  SPID (http://schemas.microsoft.com/BizTalk/2003/system-properties)

5.  ActualRetryCount (http://schemas.microsoft.com/BizTalk/2003/system-properties)

6.  FileName (http://schemas.microsoft.com/BizTalk/2003/file-properties)

7.  PartyName (http://schemas.microsoft.com/BizTalk/2003/messagetracking-properties)

8.  ReceivePortName (http://schemas.microsoft.com/BizTalk/2003/system-properties)

9.  WasSolicitResponse (http://schemas.microsoft.com/BizTalk/2003/system-properties)

10. AllowCacheOnWrite (http://schemas.microsoft.com/BizTalk/2003/file-properties)

11. RetryInterval (http://schemas.microsoft.com/BizTalk/2003/system-properties)

12. OutboundTransportCLSID (http://schemas.microsoft.com/BizTalk/2003/system-properties)

13. SPName (http://schemas.microsoft.com/BizTalk/2003/system-properties)

14. InboundTransportLocation (http://schemas.microsoft.com/BizTalk/2003/system-properties)

15. InterchangeID (http://schemas.microsoft.com/BizTalk/2003/system-properties)

16. ReceivePortID (http://schemas.microsoft.com/BizTalk/2003/system-properties)

17. SPTransportID (http://schemas.microsoft.com/BizTalk/2003/system-properties)

18. TransmitPipelineID (http://schemas.microsoft.com/BizTalk/2003/system-properties)

19. AuthenticationRequiredOnReceivePort (http://schemas.microsoft.com/BizTalk/2003/system-properties)

20. InboundTransportType (http://schemas.microsoft.com/BizTalk/2003/system-properties)

21. LRPMsgBodyTracking (http://schemas.microsoft.com/BizTalk/2003/system-properties)

22. MessageExchangePattern (http://schemas.microsoft.com/BizTalk/2003/system-properties)

23. OutboundTransportLocation (http://schemas.microsoft.com/BizTalk/2003/system-properties)

24. PortName (http://schemas.microsoft.com/BizTalk/2003/messagetracking-properties)

25. ReceivePipelineID (http://schemas.microsoft.com/BizTalk/2003/system-properties)

26. SourcePartyID ()