Paymark experienced a minor incident on May 15, 2026 affecting Online EFTPOS and Tap on Mobile, lasting 11d. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- monitoring May 15, 2026, 04:55 AM UTC
Westpac has updated their Online EFTPOS authentication for Online EFTPOS. Effective 14 May, Westpac Banking App users can no longer use their mobile number when making a payment via Online EFTPOS. This is a Westpac-side change. Online EFTPOS remains unchanged for customers of other NZ banks, who will continue to authenticate as they do today. Westpac customers must now: • Enter their 9-digit Westpac Customer ID • Westpac customers cannot use their alias (nick name) associated with their Customer ID • The Alias aspect is causing customer confusion, and we have observed an increase in failed/errored transactions A reminder of this requirement is displayed on the payment form after Westpac is selected. We are working with Westpac to improve this issue and are actively seeking their support.
- resolved May 26, 2026, 05:02 AM UTC
This incident has been resolved.