Sorry for the delay in the response. I missed this message.
Mmmm... I do not remember talking about integration of Moodle with SAP. Anyway, Moodle can just share the user data in the SAP database, selecting it in this menu:
Moodle » Administration » Users » Authentication options: Use an external database
and fill the fields.
This way, Moodle could use the same users as SAP, with the same user data (Name, Surname, Telephone,...) and the same password.
This is what I can see that could be an easy integration of SAP and Moodle. Anyway, you can make custom programming to add anything you want. For this kind of things, I recommend you to commission any Moodle Partner at http://moodle.com to make that and pay for it. You can also try on your own, specially if you have help from your IT department to get that.
Hope this helps.