hi..
SAP Exchange Infrastructure sends XML messages between application components. The processing of XML messages is based on information located in a central repository and directory that is called at runtime. The runtime environment required to process this information is provided by the Integration Engine.
Prerequisites
Your integration environment is set up and the runtime environment is configured.
The role SAP_XI_APPL_SERV_USER is assigned to those users that call the Integration Server using an application and to users used for processing on the Integration Server.
Process Flow
When the Integration Engine receives an XML message, it processes it using its pipeline; which comprises the following processing steps:
● Inbound processing with logical and technical routing, and message branching
● Outbound processing with mapping and the receiver call
Routing relates to the receivers of an XML message, which must be localized within the existing system landscape.
Logical routing determines the name of the receiver and the receiver interface; technical routing queries the communication channel (the physical address) in the Integration Directory that is required to call this interface.
During mapping, values and structures of the sender and receiver application are mapped to each other.
The following aspects are also important for message processing with the Integration Engine:
● Pipelines and pipeline services
● Quality of service
● Queues for asynchronous message processing
● Commit handling
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