Do you ALWAYS use the Conversion factor and Yield beta if both are given?

Is there a case when you wouldn’t use one or the other when both are given?

Thanks.

yes

I think what pokhim is trying to say is: yes there are

in which case you don’t use both?

Kind of a stupid qustion, but is there a case where you don’t use one or the other if both are given and not equal to 1?