Hello,
in order to my master thesis i must build a MFA model for rice cultivation.
first as i recently imported some of the values in my model and then calculated it. i became an erorr regarding contradiction in my model. as i modelled 2 crop and three cropping season in one model and the values i inserted are actually the same for both (because of the difference of the fields of the two type of cultivation i had to consider them seperately). all i want to say ist, in my model the contradiction error that i got is for 2 crop rice cultivation (RZM2) and NOT for three crop rice cultivation (RZM3), which is wired. i entered mass of rice production in good layer and N concentration which goes with the product as mass fraction of product but it seems to be a contradiction for STAN?! could you look at my model in attachment and see if there is something wrong with my model?
secondly i wanted to ask if it is right in order to MFA rules to consider all the goods in one layer of goodl?! because i have water balances in the area and then seed and rice as production and also some other stuff like fertilizer and pesticides etc. and i dont know if i should consider the subgood for every singel good i have in my model or it is actually ok to consider all of them as one good layer?
and the last thing i would like to know is that: for gas emissions it souldnt/couldnt be defined a mass. so if i define N losses to air according to the mass of applied N fertilizer in N layer and no mass for these losses (because obviously they havent any

) it souldnt be a problem. am i right?
P.S.sorry if my questions are maybe a little at beginner level, but i try to write my thesis and had no knowledge of MFA before i started my thesis so even that i saw all the tutorials there is some missing knowledge parts which i have to fill

!
i would be thankful for your answers!