Row spacing optimization

[MusabAlfarsi]

Gents,

I am new to PVsyst, the more I use it the more I figure its great potential,

I am stuck in optimizing the row spacing while choosing the unlimited sheds and getting the attached error

Your help is truly appreciated

Thanks

Musab

[André Mermoud]

The message tells exactly what happens: when you define "Unlimited sheds", the mutual shadings are computed in a generic way.

You should not define the 3D shading scene, as the simulation would account for the mutual shadings twice.

Please see the help "Project design > Shadings > Near Shadings: Main dialog > Near shadings and sheds".