Need to query workflow for Shopping Carts for a report

Hello,

I am not familar enough with SAP's workflow to know if there are tables or function modules that I can use. I am requested to develop a report to allow selection of a user's id and find all shopping carts where that person is in the workflow. Can this be done without re-inventing the world?

Thank you in advance and points will be assigned accordingly.

Regards, Dean.