diff --git a/flowroutenumbersandmessaging/controllers/routes_controller.py b/flowroutenumbersandmessaging/controllers/routes_controller.py
index e6a5506..be6a3cb 100644
--- a/flowroutenumbersandmessaging/controllers/routes_controller.py
+++ b/flowroutenumbersandmessaging/controllers/routes_controller.py
@@ -47,7 +47,7 @@ class RoutesController(BaseController):
 
         # Prepare headers
         _headers = {
-            'content-type': 'application/json; charset=utf-8'
+            'content-type': 'application/vnd.api+json; charset=utf-8'
         }
 
         # Prepare and execute request
@@ -112,23 +112,26 @@ class RoutesController(BaseController):
             raise APIException('Unauthorized', _context)
         elif _context.response.status_code == 404:
             raise APIException('Not Found', _context)
+        elif _context.response.status_code <> 200:
+            raise ErrorException('Unspecified error occurred', _context)
         self.validate_response(_context)
 
-    def update_failover_voice_route_for_a_phone_number(self,
-                                                       number_id,
-                                                       body):
-        """Does a PATCH request to /v2/numbers/{number_id}/relationships/failover_route.
+        return APIHelper.json_deserialize(_context.response.raw_body)
 
-        Use this endpoint to update the failover voice route for a phone
+    def update_primary_voice_route(self,
+                                                      number_id,
+                                                      body):
+        """Does a PATCH request to /v2/numbers/{number_id}/relationships/primary_route.
+
+        Use this endpoint to update the primary voice route for a phone
         number. You must create the route first by following "Create an
         Inbound Route". You can then assign the created route by specifying
         its value in a PATCH request.
 
         Args:
             number_id (int): The phone number in E.164 11-digit North American
-                format to which the failover route for voice will be
-                assigned.
-            body (void): The failover route to be assigned.
+                format to which the primary route for voice will be assigned.
+            body (void): The primary route to be assigned.
 
         Returns:
             void: Response from the API. NO CONTENT
@@ -143,7 +146,7 @@ class RoutesController(BaseController):
 
         # Prepare query URL
         _query_builder = Configuration.base_uri
-        _query_builder += '/v2/numbers/{number_id}/relationships/failover_route'
+        _query_builder += '/v2/numbers/{number_id}/relationships/primary_route'
         _query_builder = APIHelper.append_url_with_template_parameters(_query_builder, { 
             'number_id': number_id
         })
@@ -161,20 +164,21 @@ class RoutesController(BaseController):
             raise ErrorException('The specified resource was not found', _context)
         self.validate_response(_context)
 
-    def update_primary_voice_route_for_a_phone_number(self,
-                                                      number_id,
-                                                      body):
-        """Does a PATCH request to /v2/numbers/{number_id}/relationships/primary_route.
+    def update_failover_voice_route(self,
+                                                       number_id,
+                                                       body):
+        """Does a PATCH request to /v2/numbers/{number_id}/relationships/failover_route.
 
-        Use this endpoint to update the primary voice route for a phone
+        Use this endpoint to update the failover voice route for a phone
         number. You must create the route first by following "Create an
         Inbound Route". You can then assign the created route by specifying
         its value in a PATCH request.
 
         Args:
             number_id (int): The phone number in E.164 11-digit North American
-                format to which the primary route for voice will be assigned.
-            body (void): The primary route to be assigned.
+                format to which the failover route for voice will be
+                assigned.
+            body (void): The failover route to be assigned.
 
         Returns:
             void: Response from the API. NO CONTENT
@@ -189,7 +193,7 @@ class RoutesController(BaseController):
 
         # Prepare query URL
         _query_builder = Configuration.base_uri
-        _query_builder += '/v2/numbers/{number_id}/relationships/primary_route'
+        _query_builder += '/v2/numbers/{number_id}/relationships/failover_route'
         _query_builder = APIHelper.append_url_with_template_parameters(_query_builder, { 
             'number_id': number_id
         })