XI Adapter LOOP_IN_MESSAGE_ROUTING (Inbound service interface PI- ERP)

Hello,
my scenario:
PI is sending some data via XI Adapter to ERP (SAP ECC 6.0).
In PI SXMB_MONI shows us LOOP_IN_MESSAGE_ROUTING.
Some points:
- Proxy is generated and activated in ERP
- ERP is type of LOC (application system)
- Corresponding Integ. Server of ERP is our specific PI
- ERP HTTP port is running (SMICM->Services)
- XI Adapter is using messag protocol XI3.0
- XI Adapter refers to an HTTP RFC destination
- PI HTTP RFC destination to ERP uses /sap/xi/engine?type=entry as path prefix
- testing the PI HTTP RFC responses with: Empty HTTP request received (as suggested)
- calling ERPserver:HTTPport/sap/xi/engine?type=entry in local web browser results in: EMPTY_HTTP_REQUEST_RECEIVED (as suggested)
So why our message is send back from ERP to the sender PI integration engine and fails with LOOP_IN_MESSAGE_ROUTING?
Thanks in advance,
André

Hi,
error occours after calling the XI Adapter in CENTRAL pipeline:
HTTP-client: closing... External error header received Error exception return from pipeline processing! CENTRAL</SAP:P2>
<SAP:P3>XI</SAP:P3>
<SAP:P4 />
<SAP:AdditionalText />
<SAP:Stack> Schleife im Nachrichtenfluss entdeckt: System is.00.sappi1a, Pipeline CENTRAL mit Inbound-Adapter XI bereits durchlaufen (siehe HopList-Header) </SAP:Stack>
<SAP:Retry>M</SAP:Retry>
</SAP:Error>
Many thanks,
André
Edited by: André Schillack on Dec 6, 2010 10:56 AM

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