System.ArgumentException: {"Message":"ErrorCode:ArgumentInvalid;Property or Tag name has invalid characters. Must not contain Control Characters, '.', '$', '#', or ' '

I'm getting following whever setting property in device twin in Azure iot hub device. I'm doing follwoing:

using RegistryManager registryManager = RegistryManager.CreateFromConnectionString(_configuration["IoTHubDeviceConnectionString"]);
var desiredProperties = new TwinCollection();
desiredProperties["configConnection"] = deviceConfigConnection;

var deviceTwin = new Twin()
{
    Properties = new TwinProperties()
    {
        Desired = desiredProperties
    },

};

await registryManager.UpdateTwinAsync($"{deviceId}", deviceTwin, "*").ConfigureAwait(false);

Getting following error:

Result: Failure Exception: System.ArgumentException: {"Message":"ErrorCode:ArgumentInvalid;Property or Tag name has invalid characters. Must not contain Control Characters, '.', '$', '#', or ' '.","ExceptionMessage":""}