Abstract: A bank document processing system for processing checks, deposit slips and other financial documents which advantageously combines an automatic expert reconciliation system with conventional multi-tasking document processing apparatus so as to enable the expert reconciliation system to function as an integral part of the overall document processing system. In particular, the combined system allows expert and conventional data processing systems to efficiently and automatically communicate with one another and an operator so that expert solutions as well as conventional prebalancing results can be displayed to the operator to permit him to expeditiously perform transaction balancing functions without the need for the operator to have special expertise in finding these solutions.