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SchemeLens

ISO 8583:1987 response code

59

Suspected fraud

Standard version
ISO 8583:1987
Paired version code
ISO 8583:1993 · 102

In ISO 8583:1987, response code 59 means “Suspected fraud”. It is paired here with ISO 8583:1993 response code 102, “Suspected fraud”. The reviewed dataset contains entries for Visa, Discover, and UnionPay; 2 of the five scheme columns remain N/A.

Merchant handling

Actions to be taken

Do not provide the goods or services on this authorization. Ask the cardholder for another payment method or follow the acquirer’s instructions; do not automatically retry from the response code alone.

This is conservative merchant guidance derived from the published response meaning. Current scheme, acquirer, processor, merchant advice, and transaction-specific rules take precedence.

Scheme comparison

Descriptions in the reviewed sources

Each populated value links to its scheme record and preserves the raw code published by that source. N/A means no matching description exists in the reviewed public dataset.

Scheme descriptions compared with ISO 8583:1987 response code 59
SchemeRaw codeSource descriptionEvidence
Visa59Suspected fraudOfficial
MastercardN/AN/AN/A
American ExpressN/AN/AN/A
Discover59Suspected fraudSecondary source
UnionPay59Suspected fraud or card verification failureOfficial, limited scope

Standard sources

Version and response-name evidence