The REST URL depicted at http://openidm.forgerock.org/doc/release-notes/index.html#major-changes is wrong.
This URL is currently:
But for example, as stated a few lines above the URL in the release notes, parameters should be camel cased rather than separated by dashes. So for example, "_method" should be replaced by "method". Otherwiser, one gets the following error:
"message": "/method: Expecting a value",
"reason": "Internal Server Error",