Hi Nilton,
You can check my documents about it:
http://scn.sap.com/docs/DOC-44475
http://scn.sap.com/docs/DOC-44848
http://scn.sap.com/docs/DOC-45485
http://scn.sap.com/docs/DOC-45488
I hope it helps you.
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Portuguese version
Oi Nilton,
Te enviei os documentos que desenvolvi sobre o assunto.
Espero que ajude.
Regards,
Caíque