Process validation error 'no reference set'

Question

After I import a process from Excel into OpenLCA and validate it, I get an error that says 'no reference set.' I am, however, able to open the process without any errors. What could be causing this validation error?

Answer 1

This means that you do not have a quantitative reference set for the process, typically the product; in newer versions of openLCA, this is shown in bold.