I don't know a whole lot about the Web Analytics application, but in reading the documentation (see link above), it seems to me that they do not support generic stored processes. Rather, they support stored processes that are intended to provide further analysis of the data that was collected and stored in a SAS table. That is why you are being asked to specify a table.
Using a "report link" may be something for you to investigate (see documentation link above).
I hope that this information helps you. If not, you may want to consider opening a track with our Technical Support department:
http://support.sas.com/techsup/contact/submit_emits2.html
Vince DelGobbo
SAS R&D