Best Practices vs. BPM

Hi,
I'm new on XI, and I have to define some best-practices and naming convention that will be used by our company. The goal is to try to start working in XI the right way.
I found following sources of information :
<a href="https://websmp207.sap-ag.de/~sapidb/011000358700004455192006E/NameConventions.pdf">SAP XI 3.0 Best Practices for Naming Conventions</a>
<a href="/people/r.eijpe/blog/2006/05/22/d-xie-soap-part-3-determine-software-component-version-of-standard-sap-idocs-and-rfms Soap part 3: Determine Software Component Version of standard SAP IDocs and RFMs</a>
<a href="/people/alwin.vandeput2/blog/2006/06/07/d-xie-soap-part-4-xi-software-component-architecture-for-point-to-point-scenarios Soap part 4: XI Software Component Architecture for Point-to-Point Scenarios</a>
Here is my scenario (probably a classic one!) :
SAP R/3 (Via RFC) ==> XI ==> 3rdParty Product (Via File Adapter)
If I follow best-practices indicated in previous documents, I need 3 products with their corresponding SWCV :
- One for SAP R/3 (custom function) : Contains the RFC
- One for XI : Mapping Objects, Integration Scenarios / Processes
- One for 3rdParty Product : Interface Objects
Up to now... Does it sound correct based on your experience ??
Now, here is my problem : BPM. It sounds logic to place the Integration Process in the XI SWCV. But I cannot use Message Interfaces from another SWCV (i.e. from my 3rd Party Product or from SAP R/3).
There is probably something wrong in my understanding, and I would really appreciate if somebody could help !! How should I proceed ? I'm not sure I should put everything under the same SWCV to use BPM !
Thanks in advance,

Hello Anne,
Sebastien asked me to respond to your question.
I think you have already your question answered by Wojciech Gasior. You should use Abstract interfaces. The Abstract interface should be created in the same SWCV as the BPM.
Your flow is:
Outbound interface (RFC) ==> Message mapping 1 ==> Abstract interface ==> BPM ==> Abstract interface ==> Message mapping 2 ==>Inbound interface (File)
Now the second question...how many SWCVs?
If you follow ..
- "SAP XI 3.0 Best Practices for Naming Conventions"
- weblog "Structuring Integration Repository Content - Part 1: Software Component Versions" and
- our weblog "D-XIE Soap part 4: XI Software Component Architecture for Point-to-Point Scenarios"...
... than you should have at least 3 SWCVs:
...but you could even think of 4.
SCVW 1: "Sender application"
- Outbound interface (RFC)
SCVW 2: "XI as integration engine"
- Message mapping 1
SCVW 3: "XI as process engine"
- Abstract interface
- BPM
- Abstract interface
SCVW 2: "XI as integration engine"
- Message mapping 2
SCVW 4: "Receiver application"
- Inbound interface (File)
We advice not to place mapping programs in the sender or receiver SWCVs because those are not the applications who execute the mappings. XI executes the mappings. So it should be an XI SWCV.
Why splitting the mappings from the BPM? The mappings are executed by the integration engine in the pipeline. The BPM is executed by process engine.
Why not splitting the Abstract interfaces from the BPM? The abstract interfaces are the interfaces (signature) of the BPM.
Is 4 SWCV not an enormous overkill in stead of using 1 or maybe 2? Thats up to you. Staying flexible in reuse means splitting up your SWCV.
My opinion about using just one SWCV: It is wrong. Because you dont have a good administration of the relation between interfaces and SWCV. See our weblog for a detailed description of the administration problem.
My opinion about using two SWCV: Where do you put your mapping? In the Sender or in the Receiver SWCV? It is not the Sender application or the Receiver application which executes the mapping, but XI executes the mapping.
My opinion about using three SWCV: For point-to-point scenarios it is the best. Now you stay flexible to upgrade to all kinds of scenarios.
My opinion about using four SWCV: For BPM scenarios, it is the most flexible one. A good way of controlling the versioning of the SWCs.
Hope it helps you and I would like to hear your and other SDNers opinion about our opinion.
Kind regards,
Alwin.
(See also our D-XIE weblogs.)

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"Tinnapat Chaipanich" <[email protected]> wrote:
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