MICR Commands and Parsing

Otherwise, a three or more digit number to the right of the rightmost “on us” symbol, and to the left of the leftmost amount symbol if an amount field is present, is the check serial number.

txxxxxxxxxt xxxxxxxxo cccc txxxxxxxxxt xxxxxxxxo cccc $xxxxxx$

If both of these searches fail to produce the check serial number, extract the whole account number field from between the rightmost transit symbol and the rightmost “on us” symbol. A three, four, or five digit number to the right of the rightmost transit symbol, separated by a space or a dash from the rest of the account number is the check serial number.

txxxxxxxxxt cccc xxxxxxxxo txxxxxxxxxt cccc-xxxxxxxxo txxxxxxxxxt cccc xxxxxxxxo xx

If all of these searches fail to produce the distinct check serial number, and the check serial number field has been specified in the parsing parameter string options, no check serial number will be returned. If it is imbedded within the account number field, it will be returned as part of that variable length field.

Exceptions

Some banks print the check serial number in a location which cannot be electronically distinguished without specific exception information, although it can be visually distinguished because it is repeated in the upper right corner of the check. For these cases, the printer can hold up to nine exceptions for specific banks in its non-volatile memory (NVRAM), which is accessed by the read and write NVRAM commands. The specific bank is picked out by its transit number, and the firmware will look in the exception table for a transit number match before looking in the normal check serial number locations.

In this example, without an exception table entry, the firmware would always pick the rightmost four digit number as the check serial number following rule two above. The bank with the three digit check serial number and the four digit extension after the “on us” symbol would need to be exceptionally recognized:

txxxxxxxxxt ccc-xxxxxxxxxxoxxxx txxxxxxxxxt xxx-xxxxxxxxxxocccc

11–10

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Unisys EFP9800 manual Exceptions