Problem solvingGeneric MICR Fundamentals Guide 7-7Questions to considerWhen analyzing the results from a batch of documents that weretested in a reader sorter, you must ensure that the returneddocuments correspond to the reported rejects. You should askthe following questions:• What is the reject rate?This varies depending on the reader sorter that was used. Itis based on documents and defined for each pass throughthe reader sorter. It is not based on field or character rejects.• How was the rate calculated?Improperly oriented items such as blank sheets, pagesinserted upside down or backwards, paper handling rejects,and Amount field rejects should not be used in thecalculation.• Are jams counted as rejects?Many systems log several items as rejects each time a jamoccurs. This is often misunderstood by those who use thereader sorters. Identify and remove jams from the calculation.• Are multifeeds counted as rejects?Documents may stick together, causing multifeeds. This iscommon with paper that was cut by a guillotine cutter, or withperforated paper that is torn in groups. Multifeeds oftenproduce sequential clusters of failures, which are usuallyread when the set is resubmitted. You must determine if anyrejects are due to multifeeds and remove them from thecalculation.• Are numerical calculations correct?Make sure that the conversion to a percentage was madecorrectly. Improper truncation and slipped decimal points arecommon errors.• Were rejects resubmitted?In general, rejects should not be resubmitted as part of thebasic run. Reentering rejects distorts the actual reject rate. Itmay be useful to show that most rejects are read successfullyon the next pass.• Was the batch large enough?
