Error code VE.Bus System [276] VE.Bus Error 29

Hi
My setup is following

Product: Quattro 48/15000/200-2x100 (6 units)
Firmware version: 2656556
Product id: 2656
VE.Bus connection: VE.Bus
Hardware configuration: Three phase system, two units per phase
VRM instance: 276

Battery Lithium LifPO4 200A * 7
AC In 1 : Generator Connected 200KW
AC In 2: Grid Connected
ESS
SmartSolar MPPT VE.Can 250/100 rev2
CG EM24 Ethernet Energy Meter (PV Inverter 10KW 3PH AC out connected)

Working fine when sometimes I get error
276 VE.Bus System [276] VE.Bus Error: VE.Bus Error 29 like 4S or less
Then it gone
So, I didn’t fine this error code 29

Checked network patched cable & used original cat6 patch cable

How can I fix this error code?