At a customer conference for users of a leading e-billing system, one speaker gave some data about inquiries from law firms about invoice processing. That category of inquiries, by the way, accounted for the most calls (about a third), with invoice rejection accounting for about a quarter more.
Of the processing questions, predominantly they regarded either submission or status. In fact, 65 percent of those inquiries fell under those two, followed by 10 percent each for invoice deletion, appeals and payment inquiry.
I mention this data because a law department should focus training of its law firms on these frequently asked topics.