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I am trying to combine three FMUs into one FMU that contains all of the three. Specifically, I have one FMU of a pandapower electricity network and 2 FMUs that are CSV files converted to FMUs by using PythonFMU tool. All of the FMUs have been tested by the FMU Check and they have been simulated together to check that everything works fine.

Then I am using FMPy tool to combine all of them together and export successfully the final FMU.

However, when I am trying to validate this I get the following error:

ModelStructure/Outputs must have exactly one entry for each variable with causality="output".

Any idea of what is wrong here?

Kosmylo
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  • Are you trying to validate with the FMU Check? You do not seem to use pyfmi, but fmpy. So please adpat the tag to fmpy – Christian Bertsch Jul 12 '21 at 20:11
  • @ChristianBertsch I am getting this error either by trying to validate the FMU through FMU Check or by trying to simulate the FMU with FMPy. – Kosmylo Jul 12 '21 at 20:31

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Your problem seems to be fixed in https://github.com/CATIA-Systems/FMPy/issues/281#issuecomment-879092943 You should try to re-generate the containerized FMU with the developmenet branch of fmpy.

Christian Bertsch
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