Fat Zebra incident
Errors affecting merchants switching via FDI XTP
Fat Zebra experienced a major incident on April 14, 2025 affecting Gateway, lasting 1h 10m. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- investigating Apr 14, 2025, 12:22 AM UTC
We are currently investigating a problem with merchants switching through the FDI XTP switch, receiving '91 - Host or Switch Unavailable' or '99 - Error communicating with the bank' responses for attempted transactions.
- identified Apr 14, 2025, 12:47 AM UTC
Please see an update from Fiserv below: Fiserv is currently investigating an intermittent service disruption to XTP Transaction Processing. The scope of impact is unconfirmed at this time, however being investigated within Fiserv. We will continue to keep you updated.
- monitoring Apr 14, 2025, 01:31 AM UTC
Transactions processing via FDI XTP are now processing successfully. We are still waiting on Fiserv to confirm the issue is resolved, and will provide further update once they have.
- resolved Apr 14, 2025, 01:33 AM UTC
Please see a further update from Fiserv below: The XTP Transaction Processing incident is resolved and client impacts have ceased. We thank you for your patience and apologise for any inconvenience this event has caused to your business.