SAP e-Invoicing (Nota Fiscal) for Ecuador

Hi Everyone,

I am implementing the E-invoicing Process for Ecuador.

As i gone through the Nota Fiscal Document of SAP , it is designed for Brazil.

http://help.sap.com/saphelp_erp60_sp/helpdata/en/a7/dbf1376fdaa209e10000009b38f8cf/content.htm

Can the same will be used for Ecuador with some customizations ?

If yes, then how to do the same ?

Please help me by providing the required OSS notes,customizing for Ecuador.

Thanks in advance ,

Sathish