What does incontrol's "Device MV mismatch" error message mean (AP One AX Lite)?

General
1

Can anyone explain what this incontrol error message:

“Last Config Application Error Device MV mismatch”

for one of my AP One AX Lites means, and how to correct it ?

I cannot find any information about this.

My AP is running firmware 3.9.5 build 5019 and is controlled by a B ONE.