Customer tracking is a fundamental need for almost any commercial entity and manufacturing is not an exception. When tracking you shop and controlling the flow of work orders throughout the shop, an important question will be to which customer and order this one belongs.
In it most basic shop tracking system, you need to track customer name, address, phone and more. To be more comprehensive, a manufacturing execution system, needs to track customer entity as well as multiple contacts per customer with the position and role in buying process. Also each customer may multiple branches like shipping branch and/or billing branch.
It will also be nice to track communications with the customer. This can email communications or say phone calls history. Many manufacturing control systems also support attaching multiple documents to each customer profile such as credit report or mutually signed non-disclosure agreements.