Data transmission system and data transmitting method

A data transmission system, comprising:

• a data transmitting apparatus including a data transmitting portion that transmits data, a money input/output apparatus that receives a payment amount in the form of money or other payment inserted into the money input/output apparatus from a user in consideration of data transmission by the data transmitting portion, a report destination input portion that enables the user to input a report destination via an operation panel, and an error detecting portion that detects a communication error at the time of the data transmission by the data transmitting portion;
• a settling apparatus operably connected to the data transmitting apparatus, the settling apparatus including at least a controlling portion for issuing a refund in the event that the error detecting portion of the data transmitting apparatus detects the communication error;
• and
• a management server apparatus operably connected to the settling apparatus, the server configured to manage issuance of the refund in the event of the communication error,
• the data transmission system including a refund information transmitting portion of the management server apparatus that transmits refund information in the form of a QR code for refunding the payment amount to the user at the report destination input by the user in case the communication error is detected by the error detecting portion, so as to enable the user to obtain the refund by presenting the QR code at the settling apparatus.