Technical System Vs Business System

Question

Hi,
Can anybody briefly explain me about the following 2 queries:
a) Why do we need to create Business System, When we have Technical System in our hand?
b)why do we need Message Type? When we have Data Type in our hand,
Cheers.,
Xeon

Answer 1

Hi Xeon,
    Check these two links for why we use business system and technical system:
http://help.sap.com/saphelp_nw2004s/helpdata/en/42/c817d9d2296bb2e10000000a1553f6/frameset.htm
http://help.sap.com/saphelp_nw2004s/helpdata/en/24/8fa93e08503614e10000000a114084/frameset.htm
For Data Type and Message Type and Data Type see below:
A data type is a basic unit for defining the structure of the data for a message type and, as a result, for the message to be exchanged
->A data type is a basic unit for defining the structure of the data for a message type and, as a result, for the message to be exchanged.
A data type is an XML Schema Definition (XSD). This definition determines how the valid payload of a message will look. Data types in XML schema are only an abstract description of a structure that you can assign to elements in an XML schema definition. A message type or a fault message type that references a data type determines the name of the root element of a message.
2)Message Types
A message type comprises a data type that describes the structure of a message. At the following points in SAP Exchange Infrastructure you can refer to the message to be exchanged at runtime by using the message type:
· More than one message interface can use the same message type. For example, an asynchronous outbound message interface and an asynchronous inbound message interface can reference the same message type because the request message does not need to be mapped.
· When defining a message mapping you can directly reference message types to map messages from an outbound interface to messages from a receiver interface.
Regards,
Subhasha Ranjan