Create DataType from XSD fiel

Hi,

I have a set of XSD schema files provided by an industry standardisation group. I want to develop a mapping from SAP IDOC to this industry standard. I think I first have to create a data type from this XSD files and then I can create message types from this data types.

How can I create a message or data type from this XSD files? I have not found any import button or so. I can only view the XSD file on the XI when creating a data type manually and download this XSD. Is there also a possibility to upload an XSD?

Cheers,

Jürgen