1. The plaintiff's claim against the main defendant Han Card Co., Ltd. is dismissed.

2. Preliminary Defendant.

1. Basic facts

A. Around December 13, 2012, the Plaintiff, a company operating a shopping mall, opened an additional store for the interior (hereinafter “instant store”).

B. On May 2002, the Plaintiff entered into a service use agreement with Defendant KAS Information and Communications Co., Ltd. (hereinafter “Defendant KAS”) to use domestic and overseas credit card transaction approval services, etc. through computerized connection (hereinafter “service use agreement”). On June 14, 201, the Plaintiff entered into a special agreement with Defendant KAS, a value-added telecommunications business operator (VN), to enter into a claim for and settlement of credit card sales proceeds as an electronic data exchange method (EI, Electric data bank).

(c) The primary service provided by Defendant KAS under the service use contract is, in general, the service of transmitting credit card information and terminal numbers from the same chain store to each credit card company and requesting payment approval, in addition to the merchant number established in his own computer in addition to the credit card company's credit card information and terminal numbers, and then delivering them to the franchise store upon obtaining payment approval numbers from the credit card company, and the franchise store's service of transmitting the merchant number and settlement approval number, when the credit card company transmits the approved credit card purchase details, the service of requesting purchase from the credit card company to the credit card company approved for payment, and the online transmission of these information

On September 1, 2014, the Korea Exchange Bank Co., Ltd. (hereinafter “Korea Exchange Bank”) established the Korea Exchange Card Co., Ltd. by dividing the credit card business portion into the parts of the credit card business, and the Korea Exchange Card Co., Ltd. merged the SN Card Co., Ltd. on December 1, 2014 and changed its trade name.

(hereinafter “Foreign Exchange Bank,” “IS Card,” refers to each credit card company prior to the merger). (e)

In May 2012, approximately KRW 300,00 member stores are held.