Thomson Reuters incident

ONESOURCE Indirect Tax calculation failures in REST API - AMER PROD

Thomson Reuters experienced a minor incident on March 21, 2026 affecting ONESOURCE Determination Enterprise Cloud (AWS AMER), lasting 1h 42m. The incident has been resolved; the full update timeline is below.

Started: Mar 21, 2026, 03:10 PM UTC
Resolved: Mar 21, 2026, 04:52 PM UTC
Duration: 1h 42m
Detected by Pingoru: Mar 21, 2026, 03:10 PM UTC

Affected components

ONESOURCE Determination Enterprise Cloud (AWS AMER)

Update timeline

identified Mar 21, 2026, 03:17 PM UTC

We experienced tax calculation failures for our REST API transactions in AMER PROD between 9:45 AM - 9:50 AM CST. We are actively monitoring the situation and will soon update on the latest status.
resolved Mar 21, 2026, 04:52 PM UTC

Tax calculation failures affected REST API transactions in AMER PROD from 9:45 to 9:50 a.m. CST. The systems have auto-healed, and we are investigating the root cause. We will complete the RCA and share additional details soon.