How to Import an UBL XSD Structure in SAP ERP 6.0

Dear Experts,

I person a petition to alteration an invoice into an XML file; however, this XML indispensable comply with the UBL standard. I recognize that with the transaction STRANS I tin see a Transformation to capable a operation automatically, nevertheless, When I spot the UBL XSD Schema, to make a operation manually connected the Tcode SE11, seems to beryllium a incorrect approach. Does anyone cognize a mode to see oregon upload the UBL XSD Schema for the automatic instauration of the operation successful the DDIC ? If idiosyncratic tin nonstop maine a measurement by step, oregon immoderate Information, it volition beryllium precise appreciated. 

In immoderate threads I reddish that with Eclipse is besides possible, unluckily I'm not familiarized with Eclipse  

Thanks a batch successful advance,

Lee