Unable to Receive Files at the Receiver end

Hello All,
I have configured scenario Proxy to File with 1:2 transformation (Interface collections) ie
1 Sender and Receiver Service
1 Sender interface
2 Receiver interface
1 Message and interface mapping
1 Receiver determination
1 Interface determination
2 Receiver file channel with FCC
The QoS is Exactly Once.
My scenario is failing at Adapter Engine (Receiver end) failing to create 2 text files.
My Question is
1. The Status of the File Receiver channel in monitoring are in error status displaying "Message processing failed. Cause: com.sap.engine.interfaces.messaging.api.exception.MessagingException: Error: invalid receiver channel 'a3478068e95133a8ad28777a3fe1344d'" What is the reason for this ? I checked the Cache update and cache is upto date.
2.In SXMB_MONI , When Checked the trace part of Receiver Determination it correctly displays
"<Trace level="2" type="T">Number of Receivers:1</Trace> "
But when i checked Trace for Interface Determination it is displaying " InterfaceCollection</Trace>
<Trace level="2" type="T">...valid InbIf without Condition: InterfaceCollection</Trace>
<Trace level="2" type="T">Number of receiving Interfaces:1</Trace> "
Here it should display "Number of receiving Interfaces:2 " Right? What is the reason for this ? do we have todo multimapping?
3.In Message monitoring for Adapter Engine i could see messages in Holding state. what is the specific reason in his case (I know the literal/functional meaning) of messages going to holding state . "Maintain Order at Runtime" is checked in Interface Determination?
May I know in which situation the messages would goto into holding state (isit because IE was not able to find 2 receiver interface) and without unchecking the "Maintain Order at Runtime" option and manual intervention isit possible to process the scenario successfully?
Many thanks in Advance .
Regards,
Pavithra

Hello Ninad,
Since I am using EHP 1 SAP NetWeaver PI 7.11 , there is no explicit option of selecting "Enhanced Interface Determination" ( Its understood implicitly through the Signature tab in Message mapping (1:n transformation)) and I have done multimapping as message mapping (In the mapping editor, switch to the Signature tab page) for my scenario
The cache (AE) is perfectly fine
I am noting down my observation here.
My scenario uses QoS EO and the " Maintain Order at Runtime" option was checked. There were many System error messages due to other issues for the previous month and holding messages for this month.
I guess due to this the channels were in error though the channels' status were in green but it was displaying message " Message processing failed. Cause:com.sap.engine.interfaces.messaging.api.exception.MessagingException: Error: invalid receiver channel '1ac04de4d1103d09b5b9c764c8895e98'"
Now I filtered all the 'system error' messages with Sequence Id and deleted all of them and Resent all the holding messages and there were no message in holding .Now again i tried sending some data's ...the channel are functioning fine and no such error messages are displayed
Regards,
Pavithra

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