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SchemeLens

ISO 8583:1993 response code

115

Requested function not supported

Standard version
ISO 8583:1993
Paired version code
ISO 8583:1987 · 40

In ISO 8583:1993, response code 115 means “Requested function not supported”. It is paired here with ISO 8583:1987 response code 40, “Requested function not supported”. The reviewed dataset contains an entry for American Express; 4 of the five scheme columns remain N/A.

Merchant handling

Actions to be taken

Do not complete the transaction. Ask for corrected payment details or another payment method, and submit a new authorization only when the cause has been resolved and the acquirer’s rules allow it.

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 115
SchemeRaw codeSource descriptionEvidence
VisaN/AN/AN/A
MastercardN/AN/AN/A
American Express115Requested function not supportedSecondary source
DiscoverN/AN/AN/A
UnionPayN/AN/AN/A

Standard sources

Version and response-name evidence