Units error while modelling production constraints

[nis82063]

Hi all,

Im trying to model a supply chain. The supply chain produces a good. The production has constraints, because it is using Energy in form of liquid natural gas and there is a limit for production wastewater. In my model, I want to check if there is enough capacity in form liquid natural gas and production wastewater to produce the desired production. I can determine the possible production, but it is flawed when I want to model the inflow of my Gas and Wastewater stocks. Here I receive a units error. I am new to Vensim and a bit out of ideas how to model this.