BPM collect message

Hi All,
I am doing a scenario for collecting messages using BPM, the objective was i need to collect the input messages and to be stored, when the message reaches 10, then it should deliver all these 10 messages to the target.
for this, i have designed bpm with the
1. Receiver Step
2. Container Operation
3. Transformation and Send.
but i am getting the following error while activating
Exptession must not return an multiline value
Expression must return the interface type MI_OUT_A
Expression must return the interface type MI_IN_A
Container element var1 in step Receive1 is initialized but is not used.
Here var1 is the abstract interface
the datatype& message type was DT_A and MT_A and the interfaces are MI_OUT_A and MI_IN_A.
could anyone clarify regarding this issue..
regards,
Sai

Hi,
Check some links on BPM.
/people/krishna.moorthyp/blog/2005/06/09/walkthrough-with-bpm
/people/shabarish.vijayakumar/blog/2005/08/03/xpath-to-show-the-path-multiple-receivers
/people/arpit.seth/blog/2005/06/27/rfc-scenario-using-bpm--starter-kit
/people/sravya.talanki2/blog/2005/08/24/do-you-like-to-understand-147correlation148-in-xi
/people/michal.krawczyk2/blog/2005/09/04/xi-do-you-realy-enjoy-clicking-and-waiting-while-tracing-bpm-steps
/people/sudharshan.aravamudan/blog/2005/12/01/illustration-of-multi-mapping-and-message-split-using-bpm-in-sap-exchange-infrastructure
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/media/uuid/daea5871-0701-0010-12aa-c3a0c6d54e02
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/media/uuid/e8515171-0701-0010-be98-e37bec4706cc
Regards,
Phani
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I did the above scenario as told.
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Dt_In
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Dt_In
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1 to 1 mapping
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we are experiencing problems in BPM Collect pattern, error is not clear.
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<record>
<row>
<key>1</key>
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</row>
<row>
<key>1</key>
<val1>1</val1>
</row>
</record>
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Any body got the solution for this . I am having same problem .
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<OverallNumber>1</OverallNumber>
</ns0:BpmPatternCollectMessageToBeCollected>
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For the BPM Pattern BPMCollectMessage...
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>
Robin wrote:
> For the BPM Pattern BPMCollectMessage...
> I'm doin a file to file scenario.. Its fine at the sender side CC shows sucess and also moni but not able find any messages of my target interface any idea wat the problem is .. the recevr cc is active but no logs. .and also from IP to recvievr its not processed i guess no messages seen on moni....
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=
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Check these links
/people/stefan.grube/blog/2006/09/18/collecting-idocs-without-using-bpm
/people/pooja.pandey/blog/2005/07/27/idocs-multiple-types-collection-in-bpm
http://help.sap.com/saphelp_nw2004s/helpdata/en/76/5d373f5e550456e10000000a114084/frameset.htm
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Edited by: Jose Iván Reyes Arteaga on Dec 3, 2008 10:42 PM

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/message/426236#426236 [original link is broken]
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Can we have any steps in BPM which will address the below 2 requirments:
1. BPM should collect the 50 messages are sent it.
2 If the number of messages are not reached 50 after a period of time then also trigger the collected messages out.
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http://help.sap.com/saphelp_nwpi71/helpdata/EN/08/16163ff8519a06e10000000a114084/content.htm
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