SAP XI solution concept, opinions.

Question: I have a scenario where SAP CRM is receiving orders from a third party mobile sales application.

Right now, the only solution I can come up with, is receiving orders in CRM via IDoc, using SAP XI as middleware.

What I need is to create a message mapping between the XML file sent by the mobile application, and the IDoc ORDERS message type.
Assuming a have a schema of the XML file sent by the Mobile application, what is your estimation on the amount of work I have to put in this endeavour? Do I have to develop custom adapters? (Don't think so..but...)

Can I create the message mapping between XML and Idoc-XML? The appears so, according to what I have read, but I may have gotten the wrong impression. My experience with XI is zero.

Tks a lot

Answer:
You need up an inbound adapter depending on how your mobile device communicates. It may be file adapter, soap etc.

XI can map any XI format (given the schema/dtd) into an RFC call or IDOC to SAP

Answer:
Sorry, that was "XML" format, not "XI format"
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