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Dear,

I am having some problem understanding the meaning of having negative input or output flow in a process in a database that uses a MFLA approach.

I understand that in a ODA database a negative input or output are use to describe waste management flow but i don't understand how there can be negative values in a MFLA database.

Given that i am trying to use databases with  both approach in the same system i would be grateful if somebody is able to explain me how the negative values must be interpreted when trying to make system with different approach interact.

Thank you in advance,

Guglielmo
in openLCA by (140 points)

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