There are multiple options to choose from when creating a self managed supplier and each category is explained below.
Manage Own Categories and Own Categories: Should not be used unless for a specific and warranted reason as the categories will only be able to be built and managed directly within the suppliers account, these categories can also not be reused for any supplier as they are unique to that supplier only.
Purchaser Categories: Should be your default own for all your self managed suppliers as it allows you to built and maintain these centrally and they can be re-used for all your self managed suppliers.
Market Categories: Should only be activated if you have your own market portal and actively control products and categories directly from the market.
Steps to update this setting on any existing self managed or Ad hoc supplier
Click the Admin Cogs
icon along the top.
Click on Suppliers, then click Manage Suppliers.
Locate the supplier and click the Edit
icon to access.
Locate the product creation options section.
Using the check box select Purchaser Categories.
Click on Update.