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I am calculation a 2 product systems. The first one, the upbuilding was finished, calculated, validated - fine. The second one has only Little changes (more Energy consumption, another material) - so that I copied the most parts of the first, copied and changed the names of the flows and also changed the Parameters. I checked different times, I have got all Connections, all "Lieferprozess", but if i calculate the product-systems I get no results, how can this be? Please can you give me some hints what could be wrong? Thank you very much,

Kind regards,

in openLCA by (350 points)
by (52.4k points)
Hi Lynn, I assume also the inventory results are zero? The reference unit you are calculating is not 0? Is the database valid? Which  database are you using?

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