The unversioned propositions listed in the Proposition data tab of the Proposition Management landing page are data instances of the group data class.
They offer a flexible mechanism for the type of input values that require frequent changes without having to adjust the strategy. Changes to the values of data instances become directly available when you update the instance. These records can assume the form of a simple list of values (typically, this is the case with global decision parameters), or a set of values that are available in a specific context (for example, proposition parameters and channel centric parameters).
Unversioned propositions are used in strategies through the decision parameters component. Their values are typically defined by business users through the Decision Manager portal, but this functionality is not tied to the facilities in the portal and can be used in Designer Studio as well.