requestUriMethod
OpenID4VP: OPTIONAL. A string determining the HTTP method to be used when the requestUri parameter is included in the same request. Two case-sensitive valid values are defined in this specification: get and post. If requestUriMethod value is get, the Wallet MUST send the request to retrieve the Request Object using the HTTP GET method, i.e., as defined in RFC9101. If requestUriMethod value is post, a supporting Wallet MUST send the request using the HTTP POST method as detailed in Section 5.11. If the requestUriMethod parameter is not present, the Wallet MUST process the requestUri parameter as defined in RFC9101. Wallets not supporting the post method will send a GET request to the Request URI (default behavior as defined in RFC9101). requestUriMethod parameter MUST NOT be present if a requestUri parameter is not present.