What’s the difference between a Master Product and a Terminal Product?

You can think of a master product as a product within an ERP.   i.e. As a terminal owner or supplier, I have a specific product code for 89 Reg 10% ethanol RVP 7 gasoline.    That product can located at several terminals, each with a different description and/or PIDX code (unfortunately).  A terminal product is the definition of the product at the terminal.