FISERV INC. DL-,01 revenue for the last year amounted to 16.35 B EUR, the most of which — 7.37 B EUR — came from its highest performing source at the moment, Acceptance, the year earlier bringing 6.81 B EUR. The greatest contribution to the revenue figure was made by United States — last year it brought FISERV INC. DL-,01 14.70 B EUR, and the year before that — 14.25 B EUR.