CHECK DIGIT CALCULATION DEVICE, CHECK DIGIT CALCULATION METHOD, APPROVAL INFORMATION GENERATION DEVICE, APPROVAL INFORMATION GENERATION METHOD, TRANSACTION SUPPORT SYSTEM, TRANSACTION SUPPORT METHOD AND PROGRAM

摘要

PROBLEM TO BE SOLVED: To calculate check digit transaction capable of detecting an error in transaction information.

SOLUTION: An operator support device 11 and an approver support device 12 calculate an item value for each item in transaction information showing content of a transaction, calculate surplus of a total value of the item values with a maximum prime number 97 among numerical values which can be expressed in two digits, and calculate a check digit by subtracting the surplus from a maximal value 99 which can be expressed in two digits.

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