Unable to apply differential pairs routing rules

[mulfycrowh]

Hi everyone,

I set up an impedance of 120 Ohm in the layer stack manager.
I created a new rule as shown on the attached screenshot.
I cannot apply the rule : I get the warning: "Some rules have incorrect definitions ..."
Any idea?
Thanks.

Am Using AD19.

[mulfycrowh]

The warning is gone. I don't know why.