Support Seller/Buyer Item UOM Mapping

As a user I want to map a customer's item UOM to my items UOM so that I can make a customer's ordering process efficient.

Use Case:

• Customer places an order through my website by uploading their order file.

• In the Customer Order file they indicate they want Item 'A' and a QTY of '1' where '1' = a carton of 12.

• In my ERP I sell Item 'A' in a UOM = Each.

• I want to associate for Item 'A' my UOM = Each to my Customer's UOM = Carton