| http://www.w3.org/ns/prov#value | - [0284] (2) a message or messages indicating the occurrence of major error conditions ???JAM,??? ???DOUBLE,??? or ???CHAIN;??? and [0285] (3) maintenance messages indicating maintenance requirements or status of the device, such as whether the device requires cleaning or adjustment. [0286] Many types of financial transaction features may be incorporated into the above described devices so that they
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