Auxiliary On-Us Field

A field on the magnetic ink character recognition (MICR) line of a check or share draft. This is an optional field that can be found to the left of the routing number. The presence of this field makes the check in-eligible to be used as a source document for accounts receivable conversion (ARC), back office conversion (BOC), and point-of-purchase (POP) entries.

Related Terms

  • E-Check (or echeck)

    E-Check payments are ACH payments that originate via the internet, telephone, point-of-sale (POS), or bill payment sent through the mail or unattended lockbox. For mail and lockbox...

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  • MICR (Magnetic Ink Character Recognition)

    The information printed on a check in magnetic ink. The MICR information helps MICR scanners retrieve important information from the check including the routing number, account number...

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