Thomson Reuters incident
High latency and Intermittent failures for Tax calculations in AMER UAT
Resolved after 4 hours 47 minutes, affecting ONESOURCE Determination Enterprise Cloud (AWS AMER), on April 29, 2026.
Dear Customers, We experienced high latency & intermittent failure with tax calculations in the ONESOURCE Indirect Tax Determination - AMER UAT environment between 2:48 AM and 7:50 AM EST on April 29th. The issue is already mitigated now. We apologize for any inconvenience and appreciate your understanding and patience. Further details will be provided in the formal RCA. If you have any questions, please contact Customer Support.
Affected components
Update timeline
- investigating Apr 29, 2026, 08:53 AM UTC
We are currently experiencing intermittent issues with the Tax calculation Service feature with our Onesource Indirect Tax Determination Enterprise service.
- resolved Apr 29, 2026, 01:40 PM UTC
Dear Customers, We experienced high latency & intermittent failure with tax calculations in the ONESOURCE Indirect Tax Determination - AMER UAT environment between 2:48 AM and 7:50 AM EST on April 29th. The issue is already mitigated now. We apologize for any inconvenience and appreciate your understanding and patience. Further details will be provided in the formal RCA. If you have any questions, please contact Customer Support.
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