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digraph IntegrationProcess {

    // Define nodes

    node [shape = rectangle];

    // Define labels

    S4HANA [label = "SAP-S/4HANA", shape = oval];

    TPM[label = "CPI-TPM", shape = rectangle];

    PreIFlow [label = "CPI-Pre IFlow", shape = rectangle];

    PostIFlow [label = "CPI-Post IFlow", shape = rectangle];

    FAIFlow [label = "CPI-FA IFlow Write/Select", shape = rectangle];

    TradingPartner [label = "EDI-Trading Partner", shape = rectangle];

    // Define connections

    S4HANA -> TPM [label = "1.Sends IDOC DESADV"];

   

    TPM -> PostIFlow [label = "2.Forward EDI msg"];

    PostIFlow -> FAIFlow [label = "4.Save IDOC with correlation id"];

    PostIFlow -> TradingPartner [label = "3.Msg to EDI parnter"];

    TradingPartner -> PreIFlow [label = "5.Sends Functional Acknowledgment"];

    PreIFlow -> TPM [label = "6.B2B Monitoring FA"];

    PreIFlow -> FAIFlow [label = "7.Validate EDI FA with correlationid"];

    FAIFlow -> S4HANA [label = "8.Sends IDOC STATUS message to SAP S/4HANA"];

}

ps://dreampuf.github.io/GraphvizOnline