For every commodity of "SED" type, there must be at least one process that consumes the commodity and one process that produces the commodity.

[alexdewar]

[TinyMarsh]

Potentially silly question, but I am assuming that whether or not a process is a producer or a consumer is determined by whether or not the flow field in process_flows.csv is positive or negative, respectively? Therefore, each SED type commodity ID must be represented at least twice in process_flows.csv?

Have I understood that correctly?

[alexdewar]

Not silly at all with the lack of issue descriptions 🙈.

Yes you're right.