Orchestrated has what are called "GL Determinations" throughout the system that confirms automatically which GLs are used in various scenarios for items.
Each item is assigned one of 3 types of GL determinations and it is this information that tells Orchestrated which GLs to post to for different scenarios (e.g. revenue, expense, inventory, inventory adjusting, etc).
For more information on the differences between these types of GL Determinations, see https://support.orchestrated.com/hc/en-us/articles/115015979228-What-s-the-Difference-Between-Warehouse-Item-Group-and-Item-Level-G-L-Determinations-
For more information on the GL Account title and explanations, see https://support.orchestrated.com/hc/en-us/articles/207123117-G-L-Account-Determinations-Explanations