RCS error code for unconfirmed delivery changing from 30036 to 30046
The RCS error code returned for undeliverable messages to unreachable devices will change from 30036 to 30046 on August 10, 2026. Error code 30046 more accurately indicates device-side conditions like offline status or no connectivity, helping developers troubleshoot failures more effectively.
Starting August 10, 2026, the error code returned when an RCS message cannot be delivered to an unreachable end-user device will change from 30036 to 30046.
Error code 30046 (Message delivery not confirmed) gives developers a more accurate signal when an RCS message cannot reach an end-user device. Previously, 30036 (Validity Period Expired) was returned for these failures, pointing to queue and throughput settings as likely causes and making it easy to investigate in the wrong direction.
With 30046, the failure is correctly attributed to device-side conditions like the recipient's device being switched off, out of coverage, having no internet connection, or being unable to accept the message. This code will also serve as the standard for device-unreachable conditions across RCS and future OTT channels.
Source: original entry ↗
More from Twilio
Follow Twilio to get its new changes in your feed and email digest.
Voice Insights now tags HD audio calls
Voice Insights now automatically tags calls as HD Audio when they use AMR-WB or Opus codecs, helping you confirm endpoint configuration and correlate HD audio usage with transcription accuracy and customer satisfaction. The system also tags calls as Downsampled when HD audio is converted to narrowband, visible in Console, REST API, and Event Streams.
Live support coverage across Twilio platform and Segment
Paid support customers can now reach Twilio through live chat for help with Segment and all Twilio platform applications and products, starting October 5, 2026.
TaskRouter and Studio Public Beta in Ireland Region
TaskRouter and Studio are now available in public beta in Twilio's Ireland (IE1) region, providing EU data residency and control over where contact center routing and workflow automation data is stored.