Scenes (and groups) not working anymore

My environment:
Raspbee II, RaspBerry Pi 4B
Gateway version 2.24.2 Firmware 26780700
arround 30 Paulmann lights, 4 Osram plugs, 3 Busch Jäger switches

Everything has been working fine for 3 years.
After a restart all scenes were not working anymore.
All lights (in 4 groups) can be switeched and dimmed correctly using phoscon app, but scenes are not working anymore.

When selecting a scene in phoscon the scene in phoscon app is correctly visulized, thus, all lights visualized as on/off with according value in %.

But nothing happens to the lights.
When klicking on a light (on/off) or changing it’s intensity value the lights are siwtched and intensity is correctly set.

What I have tried so far without any effect:

  • reboot PI

  • update Phoscon

  • deletion of all scenes and cration of new scene

  • checked several attributes of devices with deconz:

    • scenes capacity limit not reached
    • all scenes in deconz deleted
    • read of attribute allways yields “scene valid = false”
    • after having added a new scene using phoscon a change of scene counts is observed in deconz
  • when clicking a scene or saving a scene in phoscon I get the following message in the info log:

17:00:02:732 add store scene task, aps-req-id: 21
17:00:02:885 0x0000000000000000 error APSDE-DATA.confirm: 0xD2 on task
17:00:03:205 0x0000000000000000 error APSDE-DATA.confirm: 0xD2 on task

according to Zigbee Error Codes in the Log · dresden-elektronik/deconz-rest-plugin Wiki · GitHub
this means
“## 0xD2 Zigbee broadcast table is full
This appears when too many broadcasts/group casts are send in fast succession.”

The same problem exists regarding all groups.

I have been switching all lights by scenes using Busch Jäger switches. Thus at the time beeing my system ist kind of useless because nothing can be switched by physical switches in the rooms.

I have no idea anymore regarding this problem. Any suggestions?

Moved to correct category.

@de_employees can you check in?