1. Bank-linked Message Formation

2. 2 Introduction of Bank-linked System 1. Message Handling Method Sending/Receiving messages to facilitate bank-linked transaction are separated into common and individual parts. 1.Common part is composed of length of message, sender/receiver institution, sent/received message, message type, massage classification, etc 2. Individual part contains such crucial information as account number, amount, etc., in order to facilitate working-level operation Initiating Operation: Bank and securities firm may request to initiate operation respectively 1. The party sending ‘initiating operation’ message initiates operation immediately upon receiving ‘normal’ response. 2. The party receiving ‘initiating operation’ message initiates operation immediately upon receiving ‘normal’ response Response time limit is set to 40 seconds Failure Notice : Failure notice can be requested by either bank or securities firm 1. All transactions are halted during the failure period. 2. Halted transactions can be resumed by failure-notifying institution sending ‘initiating operation’ message Bank sends re-requesting message, unless it receives response to the request for deposit notice/withdrawal confirmation within the time limit. Bank sends re-requesting message, if it fails to properly process received response to the request for deposit notice/withdrawal confirmation. Securities firm sends re-request massage, when no response to account transfer request is made within the time limit. Securities firm sends re-requesting message, if it fails to process after receiving account transfer request. When re-request message is being sent, transaction reference number of message common part, will be processed equally with original message Operation Closing : Closing operation can be requested by either bank or securities firm 1. Message-sending party is to close operation regardless of counterpart’s response, once it sends the message. 2. Message-receiving party is to close operation right upon receiving the message (requesting ‘close operation’) All Operations are available only when both bank and securities firm are operating normally 2. Title of Messages Sending/Receiving massages are composed of requesting and responding messages Requesting Institution Responding Institution 1.Request 2.Response

3. 3 Introduction of Bank-linked System 3. Message Types Operational Messages : Such transactional messages as deposit/withdrawal, inquiry, and cancellation, etc Managerial Message s : The messages for system management(initiation, close, failure etc) Message typesRequestRe-requestResponse Operational Message020002010210 Managerial Message080008010810 4. Message classification Message classification to perform working-level operation Securities Firm : ◆ Bank : ◇ Bilateral : ◈ Managerial messages refer to individual part messages, not such message classification as initiation, close, disorder, etc Message TypeMessages ClassificationCodeCancellation of Messages classification institution Operational Messages (0200/0210) Inquiry of Securities Firm’s Main Account Balance1100 ◆ Inquiry of Securities Account Deposit Notice21004100 ◇ Withdrawal Confirmation Request22004200 ◇ Account Transfer Request23004300 ◆ Transaction Tally(Count) Request3100 ◈ Managerial Messages (0800/0810) Network Management1100 ◈

4. 4 Introduction of Bank-linked System 5. Message Common Part Field No. ItemsModeLengthPosition Message Set Remarks RequestResponse 1Length of MessageN40 ○○ Total Length including Data Part 2SenderAN14 ○◎ B : Bank, S : Securities Firm 3Sending Institution CodeAN45 ○◎ Message Sending Institution Code: The code given to Bank, Securities Firm 4S/R FlagA19 ○◎ Send: S, Receive : R 5Message TypeN410 ○◎ 3.Refer to Message Type 6Message classificationN414 ○◎ 4.Refer to Message Classification 7Transaction Reference Number N1018 ○○ Transaction Code given to Sending Institution on transaction date 8Message sending dateN1428 ○◎ YYYYMMDDHHMISS 9Response CodeAN442 ◎ Refer to the examples of Response Code 10Transaction DateN846 ○○ YYYYMMDD 11FILLERAN4654 ○○ Total Length100Total Length of Common Part - Response Code Ex) 0000 : Normal 9001 : Before Business Hour 9002 : System Failure 1001 : Invalid Account No. 1004 : Invalid Currency 1002 : Invalid Account Name 1003 : Insufficient Balance

5. 5 Introduction of Bank-linked System Individual Part – Inquiry of Securities Firm’s Main Account Balance (0200 – 1100) Field No. ItemsModeLengthPosition Message Set Remarks RequestResponse 1~11Common PartAN1000 ○◎ 12Institution CodeAN4100 ○○ 13Bank Account NumberAN16104 ○○ 14Account NameAN120 ○○ Bank Account Holder ‘s Name 15CurrencyAN1240 ○○ K : Kip, D : US $ 16BalanceN15241 ◎ 17FILLERAN144256 ○○ Total Length400Total Length including common part SECURITIESBANK 1.Request (02001100) 2.Response (02101100)

6. 6 Introduction of Bank-linked System Individual Part – Inquiry of Securities Account Name(0200 – 1200) Field No ItemsModeLengthPosition Message Set Remarks RequestResponse 1~11Common PartAN1000 ○◎ 12Bank CodeAN4100 ○○ 13Bank Account NumberAN16104 ○○ 14Account NameAN120 ◎ Bank Account Holder’s Name 15CurrencyAN1240 ◎ K : Kip, D : US $ 16Withdrawable AmountN15241 ◎ (Amount Available to Withdraw) 17FILLERAN144256 ○○ Total Length400Total Length including Common Part BANKSECURITIES 1.Request (02001200) 2.Response (02101200)

7. 7 Introduction of Bank-linked System Individual Part – Deposit Notice (0200 – 2100), Deposit Notice Re-request (0201 – 2100) Field No. ItemsModeLengthPosition Message Set Remarks RequestResponse 1~11Common PartAN1000 ○◎ 12Bank CodeAN4100 ○○ 13BAN(Bank Account Number) AN16104 ○○ Bank Account Number registered when opening securities account 14Account NameAN120 ○○ Securities Account Holder’s Name 15CurrencyAN1240 ○○ K : Kip, D : US $ 16Transaction AmountN15241 ○○ 17Post-Transaction Account N15256 ◎ 18Securities Account No.AN6271 ◎ 19FILLERAN123277 ○○ Total Length400Total length including common part BANKSECURITIES 1.Request(02002100) 2.Response (02102100)

8. 8 Introduction of Bank-linked System Individual Part – Withdrawal Confirmation Request(0200 – 2200), Withdrawal Confirmation Re-request (0201 – 2200) Field No. ItemsModeLengthPosition Message Set Remarks RequestResponse 1~11Common PartAN1000 ○◎ 12Bank CodeAN4100 ○○ 13Bank Account NumberAN16104 ○○ BAN(Bank Account Number) registered when opening Securities Account 14Account NameAN120 ○○ Securities Account Holder’s Name 15CurrencyAN1240 ○○ K : Kip, D : US $ 16Transaction AmountN15241 ○○ 17Post-Transaction Balance N15256 ◎ 18FeesN15271 19Securities Account Number AN6286 ◎ (Securities Account can be referred to as Brokerage Account) 20Securities Account Password N4292 ○○ 21FILLERAN104296 ○○ Total Length400Total Length including Common Part BANKSECURITIES 1.Request (02002200) 2. Response (02102200)

9. 9 Introduction of Bank-linked System Individual Part – Account Transfer Request (0200 – 2300), Re-request(0201 – 2300) Field No ItemsModeLengthPosition Message Set 비고 RequestResponse 1~11Common PartAN1000 ○◎ 12Bank CodeAN4100 ○○ Transferor Bank Code(Sending by Withdrawal) 13Bank Account NumberAN16104 ○○ Transferor Bank Account Number 14Account NameAN120 ○○ Transferring Account Holder’s Name 15Counterpart Bank CodeAN4240 ○○ Transferee Bank Code(Receiving by Deposit) 16Counterpart Account Number AN16244 ○○ Transferee Bank Account Number 17CurrencyAN1260 ○○ K : Kip, D : US $ 18Transaction AmountN15261 ○○ 19Post-Transaction BalanceN15276 ○○ 20FILLERAN109291 ○○ Total Length400Total Length including Common Part SECURITIESBANK 1.Request (02002300) 2.Response (02102300)

10. 10 Introduction of Bank-linked System Individual Part – Transaction Count Request (0200 – 3100) Field No ItemsModeLengthPosition Message Set Remarks RequestResponse 1~11 Common Part AN1000 ○◎ 12 No of Deposit Notified (KIP) N6100 ○◎ 13 Sum of Deposit Notified (KIP) N15106 ○◎ 14 No of Deposit Misnotified (KIP) N6121 ○◎ 15 No of Deposit Notified (USD) N6127 ○◎ 16 Sum of Deposit Notified (USD) N15133 ○◎ 17 No of Deposit Misnotified (USD) N6148 ○◎ 18 No of Withdrawal Confirmed (KIP) N6154 ○◎ 19 Sum of Withdrawal confirmed (KIP) N15160 ○◎ 20 No of Withdrawal Misconfirmed (KIP) N6175 ○◎ 21 No of Withdrawal Confirmed (USD) N6181 ○◎ 22 Sum of Withdrawal Confirmed (USD) N15187 ○◎ 23 No of Withdrawal Misconfirmed (USD) N6202 ○◎ 24FILLERAN192208 ○○ Total Length400Total Length including Common Part SECURITIES/BA NK BANK/SECURITIE S 1.Request(02003100) 2.Response (02103100)

11. 11 Introduction of Bank-linked System Individual Part – Managerial Messages (0800 – 1100) Field No. ItemsModeLengthPosition Message Set Remarks RequestResponse 1~11Common PartAN1000 ○◎ 12Notice TypeAN1100 ○○ Notice Type 1 -> Initiate 2 -> Failure 3 -> Close 13FILLERAN299101 ○○ Total Length400Total Length including Common Part SECURITES/BA NK BANK/SECURITI ES 1.Request (08001100) 2.Response(08101100)