Set Types in Product Maintenance 
Use
Set types appear as subscreens on the tab pages in product maintenance. They have been assigned to the relevant tab pages in the Maintain Categories and Hierarchies function. For more information, see Set Types and Attributes and Category Maintenance.
The tab pages displayed in product maintenance are product views you have set up in the Customizing of a SAP Product. They are used to group together related information.
For more information, see the Implementation Guide (IMG) for SAP Products under Settings for Product Maintenance ® Define Views.
Structure
The information given in this section provides you with an overview of the standard set types available in the product master and the specific set type for the product type Material.
Cross-Product-Type (General) Set Types
The general set types which are not specific to one particular product type are listed below:
Specific Set Types of the Product Type Material
Global Trade Item Number (GTIN)