An error of 650、670

Hello, there are three errors in my operation. Could you tell me the reason? Thank you.
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cao-co2-dem-2d_2022-08-17T102817.054584.zip (76.8 KB)

Hi @wangyi

These “Required input not specified” messages are telling you that an input which is required has not been provided. In this case, the keys are INERT_SPECIES and RO_XS0.

You can use the keyword browser to find the control -

The inputs you need to specify are here:

You need to specify densities for each species, and define which one is the non-reacting species.