Patent ID: 8301567

Claim:
A method for processing a plurality of paper checks, comprising: a) receiving at least one data file containing a plurality of transaction records relating to a plurality of transactions, the transaction records being received without an image file; b) scanning the plurality of paper checks with a digital image scanner thereby creating a plurality of digital image files of the paper checks; c) submitting transaction records for ACH settlement processing; d) comparing said digital image files with said transaction records to find matches; e) determining a transaction amount difference by comparing a transaction amount from the matching transaction record with an image file transaction amount from the matched digital image file; f) storing a first predefined threshold for amount mismatch, said first predefined threshold specifying an amount by which a customer can be undercharged in an ACH-processed transaction without reversing said transaction; g) reversing ACH-processed transactions for which the transaction amount difference exceeds the predefined threshold; and h) generating by a computer a replacement transaction for the amount indicated by the image file transaction amount in cases where the transaction amount difference exceeds the predefined threshold.