The manual onboarding requires the AP SN# with 14 or 16 chars BUT the AP SN# is only 10 chars long ?
I've checked another one of my 3912 which is connected to my lab V2110 and it looks like because "reasonX" 00000 is added to the SN# that is printed on the AP and box.
It would make sense to either print the correct SN# on the box/AP or change the Defender app to support the short SN# that is visible on the box/AP.
-Ron
![b673ab45b26e4d98904cedf8a878b903_726e0d01-7448-41a1-bac0-24caa2bb4fab.png b673ab45b26e4d98904cedf8a878b903_726e0d01-7448-41a1-bac0-24caa2bb4fab.png](/t5/image/serverpage/image-id/1581i631215F89EF0E56A/image-size/large?v=v2&px=999)