The Pushed Authorization Endpoint performs Authentication Request registration

The request URI corresponding to the authorization request posted. This URI is used as reference to the respective request data in the subsequent authorization request only. The way the authorization process obtains the authorization request data is at the discretion of the authorization server and out of scope of this specification. There is no need to make the authorization request data available to other parties via this URI.

A JSON number that represents the lifetime of the request URI in seconds as a positive integer. The request URI lifetime is at the discretion of the authorization server but will typically be relatively short (e.g., between 5 and 600 seconds).