Root element for a use case descriptor Manifest format version Use case unique identifier Use case version to be incremented when a breaking change is introduced Use case name Element used to define a translatable value Use Case description Use case data schema to decode the VDS payload Payload definition List of fields defined in the payload Auxiliary data definition List of fields defined in the Auxiliary Data. Optional. If not specified, this means there are no auxiliary data. List of custom object types defined by this schema Type name. Must match any object in schema with same type. Field representing a sequence of characters. Constraints can be applied using StringConStraints element. Base entity for a schema field Type of object. Must be a reference to an object defined in Types. Extension point where new features can be added Base type for a field extension.