Trackers are irregularly distributed. The backtracking strategy is not possible

[Daksha B]

I have a 3D Scene with mixed orientations attached to the same sub-array but I am getting this error for the second/smaller orientation of modules. How do I fix it? This is PVSyst 8.0.7 and 8.0.9

[Michele Oliosi]

Hi, this is an unfortunate error message, because it sometimes appears in situations that can actually be handled by the backtracking strategy.

It does not depend on having a mixed orientation, rather it is due to dealing with a small number and/or dispersed trackers.

You can change the following advanced parameter (home window > Settings > Edit advanced parameters) :

You can try 50% or 75% before trying higher values until the error changes.

This will affect how the statistics is taken when checking for this message.

After the message has disappeared, it is recommended to enter the 3D scene and go to the menu Tools > Backtracking management.
There you can review the second orientation, and review the backtracking parameters. If necessary, you can uncheck "automatic" and enter the pitch and other parameters manually.