The allowed values list 'spec' but the description only mentions 'on' and 'off'
"transactions" => { "type" => STRING, "description" => "Indicates whether the transactions interceptors are to be installed (on) or not (off).", "expressions-allowed" => false, "nillable" => true, "default" => "off", "allowed" => [ "ON", "OFF", "SPEC" ], "access-type" => "read-write", "storage" => "configuration", "restart-required" => "all-services" },