Outage in Fat Zebra
91 - Host or Switch Unavailable errors affecting Westpac merchants
Resolved MajorIncident Report
We are currently investigating a problem with Westpac merchants receiving '91 - Host or Switch Unavailable' responses for all transactions.
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Latest Updates ( sorted recent to last )
RESOLVED
3 months ago - at 12/10/2025 05:10AM
This incident has been resolved.
MONITORING
3 months ago - at 12/10/2025 02:59AM
Transactions for Westpac merchants are now processing successfully. We will continue to monitor during the afternoon for any further problems.
INVESTIGATING
3 months ago - at 12/10/2025 02:37AM
We are currently investigating a problem with Westpac merchants receiving '91 - Host or Switch Unavailable' responses for all transactions.
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