ATKRST664E: An error occurred while registering related REST service. Extension "VALUE_0" is not valid as the URI attribute value "VALUE_1" contains more than two path segments.
Explanation: A sub resource URI is relative to the extension element being used. This sub resource URI cannot contain be more than two path segments long.
Operator Response: Specify a valid URI attribute value for the related REST service extension and retry the registration request.