# Losing packets only when using a certain Device ID **URL:** \ **Category:** Uncategorized\ **Created:** [April 14, 2022, 4:34pm UTC](https://www.thethingsnetwork.org/forum/t/losing-packets-only-when-using-a-certain-device-id/56479 "2022-04-14T16:34:12Z")\ **Posts on this page:** 1\ **Showing post:** 9
**Author:** ![LoRaTracker](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/loratracker/32/48502_2.png) [@LoRaTracker](https://www.thethingsnetwork.org/forum/u/LoRaTracker)\ **Post date:** [April 15, 2022, 12:07pm UTC](https://www.thethingsnetwork.org/forum/t/losing-packets-only-when-using-a-certain-device-id/56479/9 "2022-04-15T12:07:29Z")
> [@Fair Use Policy explained](https://www.thethingsnetwork.org/forum/t/fair-use-policy-explained/1300): > > For The Things Network’s public community network the [Fair Access Policy](https://www.thethingsnetwork.org/docs/lorawan/duty-cycle.html#maximum-duty-cycle) limits the data each end-device can send, by allowing: An average of 30 seconds uplink time on air, per 24 hours, per device. At most 10 downlink messages per 24 hours, including the ACKs for confirmed uplinks. A good goal is to keep the application payload under 12 bytes, and the interval between messages at least several minutes. An [online airtime calculator can give you some insight](https://avbentem.github.io/airtime-calculator). The following regulations apply a… “A good goal is to keep the application payload under 12 bytes, and the interval between messages at least several minutes.” --- _[View the full topic](https://www.thethingsnetwork.org/forum/t/losing-packets-only-when-using-a-certain-device-id/56479)._