Error validating proxy id
Ensure that the show mode for the request is one of: MODE_SHOW, MODE_SHOW_ABOUT, MODE_SHOW_EDIT, MODE_SHOW_HELP, MODE_SHOW_EDIT_DEFAULTS, MODE_SHOW_DETAILS, MODE_PREVIEW, or MODE_LINK.
Note that these constants are defined in the WWPRO_API_PROVIDER public API.
If the problem persists, then request the portal administrator to delete the existing local user profile using the wwsec_api.delete_portal_user API. Ensure that the user is already a member of the group when it is assigned as the default group.
Report the error to your portal administrator and request that the appropriate privileges be granted if needed.
Verify that the URL specified during provider registration is correct and that the provider is up and running.
One way to verify this for a Web provider is to enter the URL in a browser.
Include the error, the attempted operations that led to the error, any unusual circumstances that occurred before receiving this error message, and the complete stack trace produced by this error.
Those are not covered in the list as they are 100% user defined when deploying Lync.
Contact the portal administrator to enable debug logging in the portal repository and view the log information.
Cookies created by this provider were forwarded to the user's browser and managed by the browser instead of Oracle Portal.
If the WSDL URL has not changed, there could be some data inconsistency.
Verify that the URL specified for the producer registration is correct and that the producer is up and running.