What is flexfield?

A flexfield is a field made up of subfields, or segments.

A flex field appears on your form as a popup window that contains a prompt for each segment. Each segment has a name and a set of valid values.

FlexFields are  two types : Descriptive Flex Fields (DFF)and Key Flex Fields (KFF).

DFF : DFF Provide a flexible way for providing customization expansion space in forms,as well as to implement context sensitive fields that appear only when needed.

KFF : It is mandatory as it Provides a flexible way of representing primary keys using different set of segments like accounting codes, part numbers, job descriptions , and more.