What happens?
When selecting one of the modulation options the geometry can be converted to, the message The geometry selected for conversion does not have valid dimensions is displayed.
Why does it happen?
The situation occurs because the dimensions of the geometry are not valid, that is, they do not respect the dimensions of the item into which it will be converted.
What to do?
Change the geometry dimensions so that it respects the minimum and maximum dimension limits, of a sheet, allowed for the conversion.