eBillingHub
Make sure the Legal department has included your profile in their systems as an eBillingHub user their Lawtrac application.
Mitratech Support (ebillinghub.lawtrac@mitratech.com) gives the firm/vendor's information to eBillingHub. eBillingHub logs in on behalf of the firm/vendor to submit e-Billing invoices, using information from the firm/vendor.