KNX Binding, Sitemap: Number Item is not send to bus

Setup, Configuration and Use Items & Sitemaps
2

Can you try with an Item type Number instead of Number:Temperature (just to eliminate this as a potential root-cause)

Number	Hzg_Flur_EG_Temperatur_Soll	"Solltemp Flur EG [%.1f °C]"	( gRaumtemp, gEG_Flur )	{channel="knx:device:bridge:generic:Ch_Hzg_Flur_EG_Temperatur_Soll"}

Frame label="Solltemperaturen"
{
	Setpoint item=Hzg_Flur_EG_Temperatur_Soll minValue=15 maxValue=30 step=0.5
}

Anything useful in the logs?

Ps: How to use code fences