diff --git a/src/Adapters/ModelResourceAdapter.php b/src/Adapters/ModelResourceAdapter.php
index 732a564..44f24be 100644
--- a/src/Adapters/ModelResourceAdapter.php
+++ b/src/Adapters/ModelResourceAdapter.php
@@ -171,9 +171,9 @@ protected function countItems($rangeStart, $rangeEnd, $params, ?WebRequest $requ
         return count($this->getCollection($rangeStart, $rangeEnd, $params, $request));
     }
 
-    public function post($payload, $params, WebRequest $request)
+    public function postResource($resource)
     {
-        $model = $this->makeModelFromResource($payload);
+        $model = $this->makeModelFromResource($resource);
         $model->save();
 
         return $this->makeResourceFromData($model);
diff --git a/src/Adapters/ResourceAdapter.php b/src/Adapters/ResourceAdapter.php
index 627ec05..6d03903 100644
--- a/src/Adapters/ResourceAdapter.php
+++ b/src/Adapters/ResourceAdapter.php
@@ -12,6 +12,15 @@
  */
 abstract class ResourceAdapter
 {
+    public function get($params, ?WebRequest $request)
+    {
+        $id = $params["id"];
+
+        $payload = $this->makeResourceByIdentifier($id);
+
+        return $payload;
+    }
+
     /**
      * @param $payload
      * @param $params
@@ -39,20 +48,58 @@ protected function validatePutRequestPayload($payload)
         return $payload;
     }
 
-    public function get($params, ?WebRequest $request)
+    public function putResource($resource)
     {
-        $id = $params["id"];
+        throw new RestImplementationException("Missing implementation of " . __FUNCTION__);
+    }
 
-        $payload = $this->makeResourceByIdentifier($id);
+    public function post($payload, $params, WebRequest $request)
+    {
+        $payload = $this->validatePostRequestPayload($payload);
 
+        return $this->postResource($payload);
+    }
+
+    protected function validatePostRequestPayload($payload)
+    {
+        return $this->validateRequestPayload($payload);
+    }
+
+    public function postResource($resource)
+    {
+        throw new RestImplementationException("Missing implementation of " . __FUNCTION__);
+    }
+
+    public function delete($payload, $params, ?WebRequest $request)
+    {
+        throw new RestImplementationException("Missing implementation of " . __FUNCTION__);
+    }
+
+
+    protected function applyParamsToPayload($payload, $params)
+    {
         return $payload;
     }
 
-    public abstract function putResource($resource);
+    private final function validateRequestPayload($payload)
+    {
+        if (!is_array($payload)) {
+            throw new RequestPayloadValidationException("POST and PUT options require a JSON encoded resource object in the body of the request.");
+        }
+
+        return $payload;
+    }
 
-    public abstract function makeResourceByIdentifier($id);
 
-    public abstract function makeResourceFromData($data);
+    public function makeResourceByIdentifier($id)
+    {
+        throw new RestImplementationException("Missing implementation of " . __FUNCTION__);
+    }
+
+    public function makeResourceFromData($data)
+    {
+        throw new RestImplementationException("Missing implementation of " . __FUNCTION__);
+    }
 
     public function list($params, ?WebRequest $request = null)
     {
@@ -69,28 +116,13 @@ public function list($params, ?WebRequest $request = null)
         return $response;
     }
 
-    public abstract function post($payload, $params, WebRequest $request);
-
-    protected function validatePostRequestPayload($payload)
-    {
-        $this->validateRequestPayload($payload);
-    }
-
-    public abstract function delete($payload, $params, ?WebRequest $request);
-
-    protected abstract function countItems($rangeStart, $rangeEnd, $params, ?WebRequest $request);
-
-    protected abstract function getItems($rangeStart, $rangeEnd, $params, ?WebRequest $request);
-
-    protected function applyParamsToPayload($payload, $params)
+    protected function countItems($rangeStart, $rangeEnd, $params, ?WebRequest $request)
     {
-        return $payload;
+        throw new RestImplementationException("Missing implementation of " . __FUNCTION__);
     }
 
-    private final function validateRequestPayload($payload)
+    protected function getItems($rangeStart, $rangeEnd, $params, ?WebRequest $request)
     {
-        if (!is_array($payload)) {
-            throw new RequestPayloadValidationException("POST and PUT options require a JSON encoded resource object in the body of the request.");
-        }
+        throw new RestImplementationException("Missing implementation of " . __FUNCTION__);
     }
 }
\ No newline at end of file
diff --git a/src/Exceptions/RestImplementationException.php b/src/Exceptions/RestImplementationException.php
new file mode 100644
index 0000000..c256dbd
--- /dev/null
+++ b/src/Exceptions/RestImplementationException.php
@@ -0,0 +1,13 @@
+<?php
+
+namespace Rhubarb\RestApi\Exceptions;
+
+use Rhubarb\Crown\Exceptions\RhubarbException;
+
+class RestImplementationException extends RhubarbException
+{
+    public function __construct($message = "")
+    {
+        parent::__construct($message);
+    }
+}
\ No newline at end of file
diff --git a/src/UrlHandlers/RestApiHandler.php b/src/UrlHandlers/RestApiHandler.php
index 6613146..b8b4f26 100644
--- a/src/UrlHandlers/RestApiHandler.php
+++ b/src/UrlHandlers/RestApiHandler.php
@@ -13,6 +13,7 @@
 use Rhubarb\Crown\Response\NotFoundResponse;
 use Rhubarb\Crown\Response\Response;
 use Rhubarb\Crown\UrlHandlers\UrlHandler;
+use Rhubarb\RestApi\Exceptions\RestImplementationException;
 use Rhubarb\RestApi\Middleware\Middleware;
 use Rhubarb\RestApi\Middleware\MiddlewareProcessingTrait;
 
@@ -165,7 +166,11 @@ protected function generateResponseForRequest($request = null)
                 } catch (RequestPayloadValidationException $er){
                     $response = new NotAuthorisedResponse();
                     $response->setContent($er->getMessage());
-                } catch (\Throwable $er){
+                } catch (RestImplementationException $exception) {
+                    $response = new Response();
+                    $response->setResponseCode(Response::HTTP_STATUS_CLIENT_ERROR_BAD_REQUEST);
+                    $response->setResponseMessage("Bad request received");
+                } catch(\Throwable $er){
                     $response = new Response();
                     $response->setResponseCode(500);
                     $response->setResponseMessage("An internal error occurred.");