Support PUT and DELETE verbs for custom service ope
Currently WCF Data Service only support POST for extended service operations. Attempt to implement PUT or DELETE verbs result in 405 ("not allowed") response code. This makes such operations not fully REST-compliant.
More on this in WCF Data Services forum: http://social.msdn.microsoft.com/Forums/en-US/adodotnetdataservices/thread/59ee75cc-7586-4987-8749-f2d020f4edcd/
Paul Kuykendall commented
In addition, the OPTIONS verb should be supported to allow the server to suggest to the client what operations are allowed for a particular resource.