Conversation & REST APIs - Delivery Receipt Issue

Incident Report for Sinch

Resolved

This incident has been resolved.

Incident Start Time: 2026-05-05 07:00 UTC
Incident End Time: 2026-05-06 16:16 UTC
Posted May 06, 2026 - 17:17 UTC

Monitoring

A fix has been implemented and we are monitoring the results.
Posted May 06, 2026 - 16:22 UTC

Investigating

We are currently experiencing an issue with our Conversation and REST APIs.

Incident Start Time: 2026-05-05 07:00 UTC

Impact: A subset of Delivery Receipts for concatenated messages will receive an unknown state if submitted via the Conversation or REST APIs.

We will provide ongoing updates on this page. For any inquiries, please contact us at support@sinch.com.
Posted May 06, 2026 - 14:33 UTC
This incident affected: Conversation API (SMS) and Messaging APIs (REST - US, REST - EU, REST - AU, REST - CA, REST - BR).