Why do I get zero results for all impact categories in PSILCA impact assessment

Question

I have used the same method, and database in building a similar product systems in PSILCA. However 3 of the product systems out of 9 ; results in zero medium risk hours in the same impact assessment method. What could be the issue?

Answer 1

This will depend on your product systems, and the indicators used in the processes - ideally post some details? Thank you!