Is there a way to detect if a unit is unplaceable without the use EUDs?

You can create the unit in a location that you know is placeable, then move it to the questionable location. Then you could confirm existence/lack of of the unit in the questionable place-ability location and act from there. This has the added benefit of avoiding the ugly unit unplaceable error.

Yea been that with almost All the create units triggers i have guess i lack something since i saw the unplaceable bug once ill go through the create triggers again for the unit beeing unplaceable i just have so many triggers