ISO 8583:1993 response code

102

Suspected fraud

Standard version: ISO 8583:1993
Paired version code: ISO 8583:1987 · 59

In ISO 8583:1993, response code 102 means “Suspected fraud”. It is paired here with ISO 8583:1987 response code 59, “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 8583:1993 response code 102
Scheme	Raw code	Source description	Evidence
Visa	59	Suspected fraud	Official
Mastercard	N/A	N/A	N/A
American Express	N/A	N/A	N/A
Discover	59	Suspected fraud	Secondary source
UnionPay	59	Suspected fraud or card verification failure	Official, limited scope

Standard sources

Version and response-name evidence

ISO 8583:1993 metadataOfficial edition metadata; the full value table is not public.
ISO
Wikipedia ISO 8583 version tablesSecondary public source for the displayed response name.
Revision 1352601145