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SchemeLens

Message standard · edition-aware

ISO 8583, layer by layer

Start with the current 2023 standard layer. Then use the public 1987 directory as a clearly labelled legacy index for field recognition, source evidence, and scheme-profile research.

Current edition
2023
Public field index
128
Maintenance layer
ISO MA

Edition map

One standard family, three distinct layers

Edition labels are part of the data model. A familiar field number does not make its name, format, value set, or substructure universal.

  1. 2023Current edition

    The maintained standard layer supports constructed and composite data structures rather than a flat label list alone.

    DE 39
    Action code
    Shape
    n 4
    Edition source
  2. 1993Previous edition

    The action-code vocabulary expands beyond authorization outcomes into other message classes.

    DE 39
    Action code
    Shape
    3 positions
    Edition source
  3. 1987Legacy directory

    The familiar 128-position data-element directory remains useful for recognizing many deployed profiles.

    DE 39
    Response code
    Shape
    2 positions
    Edition source

Public reference layer

1987 field index

Search DE 1–128 by field number, name, format, or group. Every detail page keeps current-scheme evidence separate from this legacy base row.

ISO 8583 data-element directory

128 data elements

ISO 8583:1987 field order
ISO 8583:1987 data elements and formats
Data elementNameISO format
DE 1BitmapMessage structureb 16
DE 2Primary account number (PAN)Card and authentication datan..19
DE 3Processing codeTransaction contextn 6
DE 4Amount, transactionAmounts and currencyn 12
DE 5Amount, settlementAmounts and currencyn 12
DE 6Amount, cardholder billingAmounts and currencyn 12
DE 7Transmission date and timeDates and referencesn 10
DE 8Amount, cardholder billing feeAmounts and currencyn 8
DE 9Conversion rate, settlementAmounts and currencyn 8
DE 10Conversion rate, cardholder billingAmounts and currencyn 8
DE 11Systems trace audit number (STAN)Dates and referencesn 6
DE 12Local transaction timeDates and referencesn 6
DE 13Local transaction dateDates and referencesn 4
DE 14Expiration dateCard and authentication datan 4
DE 15Settlement dateDates and referencesn 4
DE 16Currency conversion dateDates and referencesn 4
DE 17Capture dateDates and referencesn 4
DE 18Merchant type or merchant category codeAcceptance environmentn 4
DE 19Acquiring institution country codeRouting and institutionsn 3
DE 20PAN extended country codeCard and authentication datan 3
DE 21Forwarding institution country codeRouting and institutionsn 3
DE 22Point-of-service entry modeTransaction contextn 3
DE 23Application PAN sequence numberCard and authentication datan 3
DE 24Network international identifier or function codeTransaction contextn 3
DE 25Point-of-service condition codeTransaction contextn 2
DE 26Point-of-service capture codeTransaction contextn 2
DE 27Authorizing identification response lengthTransaction contextn 1
DE 28Amount, transaction feeAmounts and currencyx+n 8
DE 29Amount, settlement feeAmounts and currencyx+n 8
DE 30Amount, transaction processing feeAmounts and currencyx+n 8
DE 31Amount, settlement processing feeAmounts and currencyx+n 8
DE 32Acquiring institution identification codeRouting and institutionsn ..11
DE 33Forwarding institution identification codeRouting and institutionsn ..11
DE 34Primary account number, extendedCard and authentication datans ..28
DE 35Track 2 dataCard and authentication dataz ..37
DE 36Track 3 dataCard and authentication datan ...104
DE 37Retrieval reference numberDates and referencesan 12
DE 38Authorization identification responseDates and referencesan 6
DE 39Response codeDates and referencesan 2
DE 40Service restriction codeCard and authentication dataan 3
DE 41Card acceptor terminal identificationAcceptance environmentans 8
DE 42Card acceptor identification codeAcceptance environmentans 15
DE 43Card acceptor name and locationAcceptance environmentans 40
DE 44Additional response dataDates and referencesan ..25
DE 45Track 1 dataCard and authentication dataan ..76
DE 46Additional data, ISOAdditional dataan ...999
DE 47Additional data, nationalAdditional dataan ...999
DE 48Additional data, privateAdditional dataan ...999
DE 49Currency code, transactionAmounts and currencya or n 3
DE 50Currency code, settlementAmounts and currencya or n 3
DE 51Currency code, cardholder billingAmounts and currencya or n 3
DE 52Personal identification number dataCard and authentication datab 64
DE 53Security-related control informationCard and authentication datan 16
DE 54Additional amountsAmounts and currencyan ...120
DE 55ICC system-related dataCard and authentication dataans ...999
DE 56Reserved for ISO useReservedans ...999
DE 57Reserved for national useReservedans ...999
DE 58Reserved for national useReservedans ...999
DE 59Reserved for national useReservedans ...999
DE 60Reserved for national useReservedans ...999
DE 61Reserved for private useReservedans ...999
DE 62Reserved for private useReservedans ...999
DE 63Reserved for private useReservedans ...999
DE 64Message authentication code (MAC)Network and settlementb 64
64 data elements remaining