Hi,
Sorry for asking such a silly question, here is the screenshot:

I checked everywhere that p_DistributionCostPerTonOfLiquid has been used and there is no place using it without its indices inside a parenthesis. I even checked the parameters having that parameter in their definition and index domain, and still couldn’t find a case where they have been used without indices.
I feel stuck and can’t see the solution anymore. Any hint why this might happen?
Best,
Gorkem