{
    "1": {
        "type": "b",
        "length": "64",
        "description": "Bit map (b 128 if secondary is present and b 192 if tertiary is present)"
    },
    "2": {
        "type": "n",
        "length": "..19",
        "description": "Primary account number (PAN)"
    },
    "3": {
        "type": "n",
        "length": "6",
        "description": "Processing code"
    },
    "4": {
        "type": "n",
        "length": "12",
        "description": "Amount, transaction"
    },
    "5": {
        "type": "n",
        "length": "12",
        "description": "Amount, settlement"
    },
    "6": {
        "type": "n",
        "length": "12",
        "description": "Amount, cardholder billing"
    },
    "7": {
        "type": "n",
        "length": "10",
        "description": "Transmission date & time"
    },
    "8": {
        "type": "n",
        "length": "8",
        "description": "Amount, cardholder billing fee"
    },
    "9": {
        "type": "n",
        "length": "8",
        "description": "Conversion rate, settlement"
    },
    "10": {
        "type": "n",
        "length": "8",
        "description": "Conversion rate, cardholder billing"
    },
    "11": {
        "type": "n",
        "length": "6",
        "description": "System trace audit number (STAN)"
    },
    "12": {
        "type": "n",
        "length": "6",
        "description": "Time, local transaction (hhmmss)"
    },
    "13": {
        "type": "n",
        "length": "4",
        "description": "Date, local transaction (MMDD)"
    },
    "14": {
        "type": "n",
        "length": "4",
        "description": "Date, expiration"
    },
    "15": {
        "type": "n",
        "length": "4",
        "description": "Date, settlement"
    },
    "16": {
        "type": "n",
        "length": "4",
        "description": "Date, conversion"
    },
    "17": {
        "type": "n",
        "length": "4",
        "description": "Date, capture"
    },
    "18": {
        "type": "n",
        "length": "4",
        "description": "Merchant type"
    },
    "19": {
        "type": "n",
        "length": "3",
        "description": "Acquiring institution country code"
    },
    "20": {
        "type": "n",
        "length": "3",
        "description": "PAN extended, country code"
    },
    "21": {
        "type": "n",
        "length": "3",
        "description": "Forwarding institution. country code"
    },
    "22": {
        "type": "an",
        "length": "4",
        "description": "Point of service entry mode"
    },
    "23": {
        "type": "n",
        "length": "3",
        "description": "Application PAN sequence number"
    },
    "24": {
        "type": "n",
        "length": "3",
        "description": "Function code (ISO 8583:1993)\/Network International identifier (NII)"
    },
    "25": {
        "type": "n",
        "length": "2",
        "description": "Point of service condition code"
    },
    "26": {
        "type": "n",
        "length": "2",
        "description": "Point of service capture code"
    },
    "27": {
        "type": "n",
        "length": "1",
        "description": "Authorizing identification response length"
    },
    "28": {
        "type": "n",
        "length": "8",
        "description": "Amount transaction fee"
    },
    "32": {
        "type": "n",
        "length": "..11",
        "description": "Acquiring institution identification code"
    },
    "33": {
        "type": "n",
        "length": "..11",
        "description": "Forwarding institution identification code"
    },
    "34": {
        "type": "ns",
        "length": "..28",
        "description": "Primary account number, extended"
    },
    "35": {
        "type": "z",
        "length": "..37",
        "description": "Track 2 data"
    },
    "36": {
        "type": "n",
        "length": "...104",
        "description": "Track 3 data"
    },
    "37": {
        "type": "an",
        "length": "12",
        "description": "Retrieval reference number"
    },
    "38": {
        "type": "an",
        "length": "6",
        "description": "Authorization identification response"
    },
    "39": {
        "type": "an",
        "length": "2",
        "description": "Response code"
    },
    "40": {
        "type": "an",
        "length": "3",
        "description": "Service restriction code"
    },
    "41": {
        "type": "ans",
        "length": "8",
        "description": "Card acceptor terminal identification"
    },
    "42": {
        "type": "ans",
        "length": "15",
        "description": "Card acceptor identification code"
    },
    "43": {
        "type": "ans",
        "length": "40",
        "description": "Card acceptor name\/location (1-23 address 24-36 city 37-38 state 39-40 country)"
    },
    "44": {
        "type": "an",
        "length": "..25",
        "description": "Additional response data"
    },
    "45": {
        "type": "an",
        "length": "..76",
        "description": "Track 1 data"
    },
    "46": {
        "type": "an",
        "length": "...999",
        "description": "Additional data - ISO"
    },
    "47": {
        "type": "an",
        "length": "...999",
        "description": "Additional data - national"
    },
    "48": {
        "type": "an",
        "length": "...999",
        "description": "Additional data - private"
    },
    "49": {
        "type": "a",
        "length": "3",
        "description": "Currency code, transaction"
    },
    "50": {
        "type": "a",
        "length": "3",
        "description": "Currency code, settlement"
    },
    "51": {
        "type": "a",
        "length": "3",
        "description": "Currency code, cardholder billing"
    },
    "52": {
        "type": "b",
        "length": "8",
        "description": "Personal identification number data"
    },
    "53": {
        "type": "n",
        "length": "16",
        "description": "Security related control information"
    },
    "54": {
        "type": "an",
        "length": "...120",
        "description": "Additional amounts"
    },
    "55": {
        "type": "ans",
        "length": "...999",
        "description": "Reserved ISO"
    },
    "56": {
        "type": "ans",
        "length": "...999",
        "description": "Reserved ISO"
    },
    "57": {
        "type": "ans",
        "length": "...999",
        "description": "Reserved national"
    },
    "58": {
        "type": "ans",
        "length": "...999",
        "description": "Reserved national"
    },
    "59": {
        "type": "ans",
        "length": "...999",
        "description": "Reserved national"
    },
    "60": {
        "type": "n",
        "length": "...13",
        "description": "Reserved national"
    },
    "61": {
        "type": "ans",
        "length": "...29",
        "description": "Reserved private"
    },
    "62": {
        "type": "ans",
        "length": "...200",
        "description": "Reserved private"
    },
    "63": {
        "type": "ans",
        "length": "...99",
        "description": "Reserved private"
    },
    "64": {
        "type": "b",
        "length": "16",
        "description": "Message authentication code (MAC)"
    },
    "65": {
        "type": "b",
        "length": "1",
        "description": "Bitmap, extended"
    },
    "66": {
        "type": "n",
        "length": "1",
        "description": "Settlement code"
    },
    "67": {
        "type": "n",
        "length": "2",
        "description": "Extended payment code"
    },
    "68": {
        "type": "n",
        "length": "3",
        "description": "Receiving institution country code"
    },
    "69": {
        "type": "n",
        "length": "3",
        "description": "Settlement institution country code"
    },
    "70": {
        "type": "n",
        "length": "3",
        "description": "Network management information code"
    },
    "71": {
        "type": "n",
        "length": "4",
        "description": "Message number"
    },
    "72": {
        "type": "n",
        "length": "4",
        "description": "Message number, last"
    },
    "73": {
        "type": "n",
        "length": "6",
        "description": "Date, action (YYMMDD)"
    },
    "74": {
        "type": "n",
        "length": "10",
        "description": "Credits, number"
    },
    "75": {
        "type": "n",
        "length": "10",
        "description": "Credits, reversal number"
    },
    "76": {
        "type": "n",
        "length": "10",
        "description": "Debits, number"
    },
    "77": {
        "type": "n",
        "length": "10",
        "description": "Debits, reversal number"
    },
    "78": {
        "type": "n",
        "length": "10",
        "description": "Transfer number"
    },
    "79": {
        "type": "n",
        "length": "10",
        "description": "Transfer, reversal number"
    },
    "80": {
        "type": "n",
        "length": "10",
        "description": "Inquiries number"
    },
    "81": {
        "type": "n",
        "length": "10",
        "description": "Authorizations, number"
    },
    "82": {
        "type": "n",
        "length": "12",
        "description": "Credits, processing fee amount"
    },
    "83": {
        "type": "n",
        "length": "12",
        "description": "Credits, transaction fee amount"
    },
    "84": {
        "type": "n",
        "length": "12",
        "description": "Debits, processing fee amount"
    },
    "85": {
        "type": "n",
        "length": "12",
        "description": "Debits, transaction fee amount"
    },
    "86": {
        "type": "n",
        "length": "16",
        "description": "Credits, amount"
    },
    "87": {
        "type": "n",
        "length": "16",
        "description": "Credits, reversal amount"
    },
    "88": {
        "type": "n",
        "length": "16",
        "description": "Debits, amount"
    },
    "89": {
        "type": "n",
        "length": "16",
        "description": "Debits, reversal amount"
    },
    "90": {
        "type": "n",
        "length": "42",
        "description": "Original data elements"
    },
    "91": {
        "type": "an",
        "length": "1",
        "description": "File update code"
    },
    "92": {
        "type": "an",
        "length": "2",
        "description": "File security code"
    },
    "93": {
        "type": "an",
        "length": "5",
        "description": "Response indicator"
    },
    "94": {
        "type": "an",
        "length": "7",
        "description": "Service indicator"
    },
    "95": {
        "type": "an",
        "length": "42",
        "description": "Replacement amounts"
    },
    "96": {
        "type": "b",
        "length": "64",
        "description": "Message security code"
    },
    "98": {
        "type": "ans",
        "length": "25",
        "description": "Payee"
    },
    "99": {
        "type": "n",
        "length": "..11",
        "description": "Settlement institution identification code"
    },
    "100": {
        "type": "n",
        "length": "..11",
        "description": "Receiving institution identification code"
    },
    "101": {
        "type": "ans",
        "length": "..17",
        "description": "File name"
    },
    "102": {
        "type": "ans",
        "length": "..28",
        "description": "Account identification 1"
    },
    "103": {
        "type": "ans",
        "length": "..28",
        "description": "Account identification 2"
    },
    "104": {
        "type": "ans",
        "length": "...100",
        "description": "Transaction description"
    },
    "105": {
        "type": "ans",
        "length": "...999",
        "description": "Reserved for ISO use"
    },
    "106": {
        "type": "ans",
        "length": "...999",
        "description": "Reserved for ISO use"
    },
    "107": {
        "type": "ans",
        "length": "...999",
        "description": "Reserved for ISO use"
    },
    "108": {
        "type": "ans",
        "length": "...999",
        "description": "Reserved for ISO use"
    },
    "109": {
        "type": "ans",
        "length": "...999",
        "description": "Reserved for ISO use"
    },
    "110": {
        "type": "ans",
        "length": "...999",
        "description": "Reserved for ISO use"
    },
    "111": {
        "type": "ans",
        "length": "...999",
        "description": "Reserved for ISO use"
    },
    "112": {
        "type": "ans",
        "length": "...999",
        "description": "Reserved for national use"
    },
    "113": {
        "type": "ans",
        "length": "...999",
        "description": "Reserved for national use"
    },
    "114": {
        "type": "ans",
        "length": "...999",
        "description": "Reserved for national use"
    },
    "115": {
        "type": "ans",
        "length": "...999",
        "description": "Reserved for national use"
    },
    "116": {
        "type": "ans",
        "length": "...999",
        "description": "Reserved for national use"
    },
    "117": {
        "type": "ans",
        "length": "...999",
        "description": "Reserved for national use"
    },
    "118": {
        "type": "ans",
        "length": "...999",
        "description": "Reserved for national use"
    },
    "119": {
        "type": "ans",
        "length": "...999",
        "description": "Reserved for national use"
    },
    "120": {
        "type": "ans",
        "length": "...999",
        "description": "Reserved for private use"
    },
    "121": {
        "type": "ans",
        "length": "...999",
        "description": "Reserved for private use"
    },
    "122": {
        "type": "ans",
        "length": "...999",
        "description": "Reserved for private use"
    },
    "123": {
        "type": "ans",
        "length": "...999",
        "description": "Reserved for private use"
    },
    "124": {
        "type": "ans",
        "length": "...999",
        "description": "Reserved for private use"
    },
    "125": {
        "type": "ans",
        "length": "...999",
        "description": "Reserved for private use"
    },
    "126": {
        "type": "ans",
        "length": "...999",
        "description": "Reserved for private use"
    },
    "127": {
        "type": "ans",
        "length": "...999",
        "description": "Reserved for private use"
    },
    "128": {
        "type": "b",
        "length": "64",
        "description": "Message authentication code"
    }
}