The function of the CVP Subdialog Return element in a VXML application is to populate variables sent back to Cisco Contact Center Enterprise (CCE) from the VXML application. This element is used at the end of a subdialog invocation to return control to the main IVR application, along with any data collected or processed during the subdialog. This mechanism allows for dynamic exchange of information between different parts of an IVR application and the broader Contact Center solution, enabling complex call flows and data-driven decision-making.References:Documentation on Cisco's VXML Server and CVP provides detailed information on how Subdialog Return elements are used within VXML applications to interface with CCE and other components of the Contact Center infrastructure.