Thanks, I did it already. From this short film I got to know that such properties have to be set.
And I still don't know what I do wrong.
I suggest you contact your local support organisation to try and resolve this.
I found what the problem is.
In case of 2 components that were created by IO Designer, the ground pins have Pin Type = GROUND.
All other components that were translated from Altium library have ground pins Pin Type = POWER.
So in case of these two components I changed the Pin Type property to POWER and no more errors are generated.
But I'm curious where should I define that GROUND property is also OK. I looked to VerifyDefaults.ini file but it is still not clear to me.
Have you tried removing the power net property? You can't have the power net property on Ground nets. I created an Idea (Create a new property that is equivalent to the property "Power Supply Net", but for ground nets ) for a new property for Ground nets