Is there a way to interface pre-approved requisitions into the ePro module, that would source to PO?

Some of our users are looking into the possibility of interfacing eProcurement pre-approved requisitions data, rather than manually entering individual requisitions in ePro. The file would load into eProcurement and eventually source to Purchase Orders. Is anyone doing this already, what is the process, and does the file need to be in a specific format, etc…?