Transient Data Entities
Transient data entities allow your Form Driven Flows to temporarily store and display data that has been loaded from or is going to be saved to an external data source. Thus, legacy systems benefit the most from the use of transient data and the data and metadata are not lost. The transient data entity's attributes are included in the flow's data model through data extensions (see Extend the Data Model for details) and their values are preserved only while the flow is open. Transient data entities use automation scripts for load/save that are triggered when such a flow is displayed or when it is saved to facilitate data transfers from/to external sources.