Sample ISO8583 conversion to JSON
This article describes how the ISO8583 Converter creates a JSON object from an incoming TCP/IP ISO8583 binary message, and then sends it to a HTTp host as a POST. Go to ISO8583 converter to JSON for more details and download links.
Analysis of a sample ISO8583 to JSON conversion, from the Converter.
Take the following ISO8583 sample message
06-11-23 06:00:41:068:CNV: Message received by Converter 06-11-23 06:00:41:069:- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 06-11-23 06:00:41:070:CNV: MessageType: 0100 06-11-23 06:00:41:071:CNV: Bitmap: 723C46D128E0B000 [2,3,4,7,11,12,13,14,18,22,23,25,26,28,32,35,37,41,42,43,49,51,52] 06-11-23 06:00:41:072:CNV: F02_PAN: 9876500000306082 06-11-23 06:00:41:073:CNV: F03_ProcessingCode: 010000 06-11-23 06:00:41:074:CNV: F04_AmountTransaction: 000000005000 06-11-23 06:00:41:075:CNV: F07_TransmissionDateTime: 1106060040 06-11-23 06:00:41:077:CNV: F11_SystemTraceAuditNumber: 000004 06-11-23 06:00:41:077:CNV: F12_DateTimeLocalTransaction: 231106 06-11-23 06:00:41:078:CNV: F13_DateLocalTxn: 1106 06-11-23 06:00:41:079:CNV: F14_DateExpiration: 3012 06-11-23 06:00:41:080:CNV: F18_MerchantType: 5961 06-11-23 06:00:41:081:CNV: F22_POSDataCode: 020 06-11-23 06:00:41:082:CNV: F23_CardSequenceNumber: 000 06-11-23 06:00:41:083:CNV: F25_MessageReasonCode: 00 06-11-23 06:00:41:083:CNV: F26_CardAcceptorBusinessCode: 53 06-11-23 06:00:41:084:CNV: F28_DateReconciliation: 000000000 06-11-23 06:00:41:086:CNV:F32_AcquiringInstitutionIdentificationCo: 27610000001 06-11-23 06:00:41:086:CNV: F35_Track2Data: 9876500000306082=30121011123123000 06-11-23 06:00:41:087:CNV: F37_RetrievalReferenceNumber: 004030000000 06-11-23 06:00:41:091:CNV: F41_CardAcceptorTerminalIdentification: 20390059 06-11-23 06:00:41:092:CNV: F42_CardAcceptorIdentificationCode: 111120000012000 06-11-23 06:00:41:093:CNV: F43_CardAcceptorNameLocation: contact@neaPay.comAlmere-AmsterdamNeth 06-11-23 06:00:41:094:CNV: F49_CurrencyCodeTransaction: 566 06-11-23 06:00:41:095:CNV: F51_CurrencyCodeCardholderBilling: 566 06-11-23 06:00:41:095:CNV: F52_PINData: FEE8CA6A604F09F0 06-10-21 06:00:41:096:- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Basic functionality
The way the ISO8583 Converter to JSON works in its basic configuration is to map each ISO 8583 field to a JSON field.
Usually customers want that neapay handles all ISO8583-related data and pre-builds the response message to the acquirer.
Therefore, we compose the reponse message and we convert the response to the HTTP host.
06-10-21 06:00:41:163:CNV: Converted JSON:
[
{
"name": "MessageType",
"value": "0110"
},
{
"name": "Bitmap",
"value": "723040012EE08400"
},
{
"name": "F02_PAN",
"value": "9876500000306082"
},
{
"name": "F03_ProcessingCode",
"value": "010000"
},
{
"name": "F04_AmountTransaction",
"value": "000000005000"
},
{
"name": "F07_TransmissionDateTime",
"value": "1106060041"
},
{
"name": "F11_SystemTraceAuditNumber",
"value": "000004"
},
{
"name": "F12_DateTimeLocalTransaction",
"value": "231106"
},
{
"name": "F18_MerchantType",
"value": "5961"
},
{
"name": "F32_AcquiringInstitutionIdentificationCode",
"value": "27610000001"
},
{
"name": "F35_Track2Data",
"value": "9876500000306082=30121011123123000"
},
{
"name": "F37_RetrievalReferenceNumber",
"value": "004030000000"
},
{
"name": "F38_ApprovalCode",
"value": "594919"
},
{
"name": "F39_ActionCode",
"value": "00"
},
{
"name": "F41_CardAcceptorTerminalIdentification",
"value": "20390059"
},
{
"name": "F42_CardAcceptorIdentificationCode",
"value": "111120000012000"
},
{
"name": "F43_CardAcceptorNameLocation",
"value": "contact@neaPay.comAlmere-AmsterdamNeth"
},
{
"name": "F49_CurrencyCodeTransaction",
"value": "566"
},
{
"name": "F54_AdditionalAmounts",
"value": "0002504C000055102.020001504+000006030701"
}
]
SQL Converter wrote this SQL record to reports//SQLFile-2311060550.sql INSERT INTO transaction_table ( MessageType, Bitmap, F02_PAN, F03_ProcessingCode, F04_AmountTransaction, F07_TransmissionDateTime, F11_SystemTraceAuditNumber, F12_DateTimeLocalTransaction, F18_MerchantType, F32_AcquiringInstitutionIdentificationCode, F35_Track2Data, F37_RetrievalReferenceNumber, F38_ApprovalCode, F39_ActionCode, F41_CardAcceptorTerminalIdentification, F42_CardAcceptorIdentificationCode, F43_CardAcceptorNameLocation, F49_CurrencyCodeTransaction, F54_AdditionalAmounts) VALUES ( '0110', '723040012EE08400', '9876500000306082', '010000', '000000005000', '1106060041', '000004', '231106', '5961', '27610000001', '9876500000306082=30121011123123000', '004030000000', '594919', '00', '20390059', '111120000012000', 'contact@neaPay.comAlmere-AmsterdamNeth', '566', '0002504C000055102.020001504+000006030701')
XML Converter wrote this XML record to reports//XMLFile-2311060550.XML MessageType 0110 Bitmap <bitmap_position>1 723040012EE08400 <F02_PAN> F02_PAN <bitmap_position>2 9876500000306082 <F03_ProcessingCode> F03_ProcessingCode <bitmap_position>3 010000 <F04_AmountTransaction> F04_AmountTransaction <bitmap_position>4 000000005000 <F07_TransmissionDateTime> F07_TransmissionDateTime <bitmap_position>7 1106060041 <F11_SystemTraceAuditNumber> F11_SystemTraceAuditNumber <bitmap_position>11 000004 <F12_DateTimeLocalTransaction> F12_DateTimeLocalTransaction <bitmap_position>12 231106 <F18_MerchantType> F18_MerchantType <bitmap_position>18 5961 <F32_AcquiringInstitutionIdentificationCode> F32_AcquiringInstitutionIdentificationCode <bitmap_position>32 27610000001 <F35_Track2Data> F35_Track2Data <bitmap_position>35 9876500000306082=30121011123123000 <F37_RetrievalReferenceNumber> F37_RetrievalReferenceNumber <bitmap_position>37 004030000000 <F38_ApprovalCode> F38_ApprovalCode <bitmap_position>38 594919 <F39_ActionCode> F39_ActionCode <bitmap_position>39 00 <F41_CardAcceptorTerminalIdentification> F41_CardAcceptorTerminalIdentification <bitmap_position>41 20390059 <F42_CardAcceptorIdentificationCode> F42_CardAcceptorIdentificationCode <bitmap_position>42 111120000012000 <F43_CardAcceptorNameLocation> F43_CardAcceptorNameLocation <bitmap_position>43 contact@neaPay.comAlmere-AmsterdamNeth <F49_CurrencyCodeTransaction> F49_CurrencyCodeTransaction <bitmap_position>49 566 <F54_AdditionalAmounts> F54_AdditionalAmounts <bitmap_position>54 0002504C000055102.020001504+000006030701
Standard behaviour of the converter
06-10-21 06:00:41:425:CNV: Rcv Data:[{"name":"MessageType","value":"0110"},{"name":"Bitmap","value":"723040012EE08400"},{"name":"F02_PAN","value":"9876500000306082"},{"name":"F03_ProcessingCode","value":"010000"},{"name":"F04_AmountTransaction","value":"000000005000"},{"name":"F07_TransmissionDateTime","value":"1106060041"},{"name":"F11_SystemTraceAuditNumber","value":"000004"},{"name":"F12_DateTimeLocalTransaction","value":"231106"},{"name":"F18_MerchantType","value":"5961"},{"name":"F32_AcquiringInstitutionIdentificationCode","value":"27610000001"},{"name":"F35_Track2Data","value":"9876500000306082=30121011123123000"},{"name":"F37_RetrievalReferenceNumber","value":"004030000000"},{"name":"F38_ApprovalCode","value":"594919"},{"name":"F39_ActionCode","value":"00"},{"name":"F41_CardAcceptorTerminalIdentification","value":"20390059"},{"name":"F42_CardAcceptorIdentificationCode","value":"111120000012000"},{"name":"F43_CardAcceptorNameLocation","value":"contact@neaPay.comAlmere-AmsterdamNeth"},{"name":"F49_CurrencyCodeTransaction","value":"566"},{"name":"F54_AdditionalAmounts","value":"0002504C000055102.020001504+000006030701"}]
The Issuing host has the ultimate saying and can alter the fields in any way, even add or remove fields.
Our converter takes care of all the logic, but offers the host the power to change anything, if the host chooses to.
The host can reply with all the fields, no fileds, some fields, or just with an empty 200 HTTP response, and the neapay converter will send the response to the ISO8583 host.
06-10-21 06:00:41:444:CNV: Message response sent by Converter 06-10-21 06:00:41:450:- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 06-10-21 06:00:41:450:CNV: MessageType: 0110 06-10-21 06:00:41:451:CNV: Bitmap: 723040012EE08400 [2,3,4,7,11,12,18,32,35,37,38,39,41,42,43,49,54] 06-10-21 06:00:41:452:CNV: F02_PAN: 9876500000306082 06-10-21 06:00:41:453:CNV: F03_ProcessingCode: 010000 06-10-21 06:00:41:453:CNV: F04_AmountTransaction: 000000005000 06-10-21 06:00:41:454:CNV: F07_TransmissionDateTime: 1106060041 06-10-21 06:00:41:455:CNV: F11_SystemTraceAuditNumber: 000004 06-10-21 06:00:41:456:CNV: F12_DateTimeLocalTransaction: 231106 06-10-21 06:00:41:456:CNV: F18_MerchantType: 5961 06-10-21 06:00:41:457:CNV:F32_AcquiringInstitutionIdentificationCo: 27610000001 06-10-21 06:00:41:458:CNV: F35_Track2Data: 9876500000306082=30121011123123000 06-10-21 06:00:41:459:CNV: F37_RetrievalReferenceNumber: 004030000000 06-10-21 06:00:41:459:CNV: F38_ApprovalCode: 594919 06-10-21 06:00:41:460:CNV: F39_ActionCode: 00 06-10-21 06:00:41:463:CNV: F41_CardAcceptorTerminalIdentification: 20390059 06-10-21 06:00:41:464:CNV: F42_CardAcceptorIdentificationCode: 111120000012000 06-10-21 06:00:41:465:CNV: F43_CardAcceptorNameLocation: contact@neaPay.comAlmere-AmsterdamNeth 06-10-21 06:00:41:466:CNV: F49_CurrencyCodeTransaction: 566 06-10-21 06:00:41:467:CNV: F54_AdditionalAmounts: 0002504C000055102.020001504+000006030701 06-10-21 06:00:41:468:- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
A sample run of an ISO8583 acquirer simulator, an ISO8583 to HTTP/JSON converter, and a HTTP Host server
A sample decline of the HTTP host
In this example of an Authorization in ISO8583-87 format, the host, which only receives a JSON of the response data, has decided to decline a transaction that the converter has decided to approve.
Therefore, the converter sends back a decline response to the transaction.
The converter can do all MAC, EMV, key exchnages and PIN verification, and the host can receive only transactions that have passed pre-screeening.
