This took me many hours to finally really guess the problem: two bones, one I can add a keyframe, the other I receive this message "no suitable context info for active keying set", how to fix it?.
Now I want to avoid being surprised, mostly because the error message does not specify why it is happening.
If it could have said "you cant add a keyframe because of the DEF prefix", I would have spend 1s solving the problem. :(
So, is there any updated documentation about how these namings behave? in a direct consideration of blocking and/or adding functionality.
PS.: I cant add this tag "naming-convention" but I guess it is essential now.