---
title: Litmus UNS 1.3.4
slug: uns/litmus-uns-134
docTags: 
createdAt: 2026-03-04T15:41:36.379Z
---

Release Date: May 19, 2026

## Enhancement

| Description                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
| ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **PacketID Warning:**<br />* Added ability to define early warning messages of 25, 50, 75% PacketID consumption. Define in the following format.<br />:::BlockQuote{indent="1"}
2026-05-19T16:28:22.007Z        warn    client inflight near capacity   \{"bucket": "25%", "client": "quota-no-ack-sub-7337312a", "len": 32212, "cap": 65535}&#xA;2026-05-19T16:28:27.569Z        warn    client inflight near capacity   \{"bucket": "50%", "client": "quota-no-ack-sub-7337312a", "len": 32768, "cap": 65535}&#xA;2026-05-19T16:31:16.754Z        warn    client inflight near capacity   \{"bucket": "75%", "client": "quota-no-ack-sub-7337312a", "len": 49152, "cap": 65535}
::: |
| - Added PacketID exhaust warning message.<br />:::BlockQuote{indent="1"}
2026-05-19T14:14:09.103Z        warn    packetID search exhausted — inflight at capacity        \{"client": "quota-no-ack-sub-04dd3140", "len": 65535, "cap": 65535}
:::<br />* Added packet drop warning message after the packetID is entirely exhausted.<br />:::BlockQuote{indent="1"}
2026-05-19T14:14:09.104Z warn packet ids exhausted — dropping publish \{"client": "quota-no-ack-sub-04dd3140", "listener": "mqtt-tcp", "topic": "testtopic/test", "qos": 1, "inflight\_len": 65535, "receive\_maximum": 65535}5}
:::                                                                              |