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XI Instance Strategy - relationship to R/3

I am told that as soon as we start to use ABAP proxies between R/3 and XI, we can only have a single XI instance talking with that R/3. Can someone confirm this and explain why? My concern is that we have a number of potential systems that have a long-lived process relationship with R/3 and I do not want to have them drive my message storage on XI.

Also, what are the issues we need to consider when interfacing across many R/3 environments, as well as non-SAP ones, as far as number of instances of XI to have?

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  • Posted on May 26, 2005 at 08:24 PM

    I'll only reply to your first question as I am not entirely sure what you mean with the others (feel free to elaborate).

    Yes, an R/3 system (client) can only communicate with a single XI instance using proxies. I won't attempt to guess the reasoning behind this, but it is caused by the way things are configured in the SLD. Any given business system is associated in the SLD with exactly one XI instance (through the "related integration server" field). This information is used by the proxy framework <i>at runtime</i> to determine which XI server to send messages to.

    Regards,

    Thorsten

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  • Posted on May 29, 2005 at 11:58 AM

    Hi Rick,

    the idea from XI is to reduce the number of interfaces by using only one integration platform. For that reason it wouldn't be senseful to connect one R/3 to many XIs.

    Inside the R/3 you have to configure: TA SXMB_ADM/ configure intergration engine/ field role: integration server or application system. You have to take application system. Field related integration server: You can take (of course) only one XI.

    Regards, Udo

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