This Blog entry is from the Getting Started in Jube section in Learn Jube.

All children have the option to specify if it should be specified as being a Response Payload. A Response Payload means that the content or value created by the object will be returned to the HTTP response stream, otherwise excluded. It is a means to reduce the amount of bandwidth that is used for extremely large models and thus speed up transport of the response message:

Irrespective of the Response Payload being selected, the value will still be stored in the archive database.