Writing a Descriptor and reading it back issue

[DS4]

My device is a Central that connects to a peer.

I write all relevant characteristic descriptors to enable notification with value 0x01. And indeed all notification work fine.

But when I read the descriptors , I get that some have value 0x01 (as written to them) but others read 0x00.

Again, I do get notifications from the ones I read zero. But why do they read zeo?

What am I missing?

[JONATHAN LL]

Is the devices that return 0x00 "read only" ? If that is the case then even if you try to write to them they would still be 0x00. So this will be depending on the permission.

Regards,
Jonathan