Why does chirpstack display this?
Code: UPLINK_F_CNT_RETRANSMISSION
Level: WARNIN
time: "2026-03-16T10:18:51.906760402+00:00" tenantId:"52f14cd4-c6f1-4fbd-8f87-4025e1d49242"
tenantName:"ChirpStack"
applicationId:"0431630a-0451-4001-acdb-08e82a19c050"
applicationName:"20260303TEST3"
deviceProfileId:"19fb0636-aa81-42d5-8d01-a23429250511"
deviceProfileName:"SLC_SELF_Rx1OneSec"
deviceName:"0080e1150541bb6e"
devEui:"0080e1150541bb6e"
deviceClassEnabled:"CLASS_C"
tags:
level:"WARNING"
code:"UPLINK_F_CNT_RETRANSMISSION"
description:"Uplink was flagged as re-transmission / frame-counter did not increment"
deduplication_id:"b247d867-86ee-4110-9743-4fee2040ba4
This frame counter is not incrementing on its own, but the data I uploaded are all different. Why does this phenomenon occur?
This resulted in my message being confirmed, but due to the reason of UPLINK_F_CNT_RETRANSMISSION, my LoRaWAN node was unable to receive the ACK.
This resulted in my node showing NACK, and subsequently the ADR of the node underwent DR adjustment.
