unexpected error has occured

Question

Hello everyone. I am new in modelling and programming. Can someone help me here, when i try to calculate product system i always get a message which reads " unexpected error has occurred- formulation evaluation failed, exchange 282817". i am using openlca 1.6.3 version. thank you

Answer 1

Hello Ofentse,
this indicates that a formula is not correct. Please check the database by validating it (right-click on the database when it is open), it will then show the processes where the formulas are incorrect (which can happen due to mis-spelled parameters or so).
Best wishes,
Andreas

Comments

Hi Andreas
I validated the database and it shows that everything is okay.