You can specify input and output parameters to generate a data flow between business process tests, business components, and flows. For example, you might want to pass user credentials from a test into its business components or flows, or you might want to pass an Order ID parameter that is generated from a business component to be further processed in subsequent business components or flows.
As their names imply, input parameters provide data to the testers of one or more specific business components in a flow, while output parameters represent the data that is produced by the testers of one or several business components with the intention to pass information on to the testers of subsequent business components.
To specify new parameters for a flow or to edit existing parameters of a flow: