Why I am getting all zero impacts after running calculation?

Question

I imported process flow from lcacommons website. I tried to run calculation by using that data. But it is showing zero values in results. Where all the background flows were interconnected. Can someone please suggest what would have been gone wrong?

Comments

Unfortunately, there may be several different answers to your question based on what exactly you downloaded from the nexus.  I would imagine that the CML method available within the nexus would be using the openLCA reference flows, and that most data available from there would use the same set of flows. Someone else with way more experience in the data and methods available would need to weigh in here.

Regarding the lcacommons, they only have 2 impact assessment methods available that are compatible with the federal elementary flows list - recipe - https://www.lcacommons.gov/lca-collaboration/Federal_LCA_Commons/ReCiPe/datasets and traci - https://www.lcacommons.gov/lca-collaboration/US_Environmental_Protection_Agency/TRACI/datasets.