That looks like a bug in the UI. You should open a support request with the product team for this: https://learn.microsoft.com/azure/iot-fundamentals/iot-support-help?toc=%2Fazure%2Fiot-central%2Ftoc.json&bc=%2Fazure%2Fiot-central%2Fbreadcrumb%2Ftoc.json#create-an-azure-support-request
Invalid filter paremeter IoT Central
Yaroslav Pryshchyp
1
Reputation point
When filtering devices, a search error occurs.