a warning in hfss; about computing port dispersion.

[mac.feri]

[warning] Fast sweep setup, process hf3d: Poor convergence in computing port dispersion.
this is a warning i have some questions about:
1. what does it refer to?
2. what is "port dispersion"?
3. how can i control or determine the properties of this convergence?
4. to what level this error may effect my results?

 

[project.email]

I,m not sure but I think
this error is because of incorrect definition of excitation in your project.