Outage in Fat Zebra

91 Errors Affecting AMEX Transactions Processed Via FDI XTP

Resolved Major

October 31, 2025 - Started 3 months ago - Lasted 1 day
Official incident page

Incident Report

We are currently investigating a problem with AMEX transactions receiving 91 response codes for some transaction attempts processed via FDI XTP. We are awaiting further information from our upstream provider regarding this incident. Please note, this issue is ONLY affect AMEX transactions, all other card types including Visa and Mastercard are NOT affected. Further updates will be provided as soon as they are available.

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Latest Updates ( sorted recent to last )

RESOLVED 3 months ago - at 11/01/2025 04:32AM

This incident has been resolved.

IDENTIFIED 3 months ago - at 10/31/2025 03:27AM

We are currently investigating a problem with AMEX transactions receiving 91 response codes for some transaction attempts processed via FDI XTP.

We are awaiting further information from our upstream provider regarding this incident.

Please note, this issue is ONLY affect AMEX transactions, all other card types including Visa and Mastercard are NOT affected.

Further updates will be provided as soon as they are available.

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