diff --git a/libraries/default/InboxProcessors/BroodInboxProcessor.php b/libraries/default/InboxProcessors/BroodInboxProcessor.php
index f055c1e..c7d655f 100644
--- a/libraries/default/InboxProcessors/BroodInboxProcessor.php
+++ b/libraries/default/InboxProcessors/BroodInboxProcessor.php
@@ -22,7 +22,7 @@ class BroodInboxProcessor extends GenericInboxProcessor
     }
 }
 
-class ToolInterconnectionProcessor extends BroodInboxProcessor implements GenericProcessorActionI {
+class ToolInterconnectionProcessor extends BroodInboxProcessor implements GenericInboxProcessorActionI {
     public $action = 'ToolInterconnection';
     protected $description;
 
diff --git a/libraries/default/InboxProcessors/GenericInboxProcessor.php b/libraries/default/InboxProcessors/GenericInboxProcessor.php
index ea71884..1ca84ea 100644
--- a/libraries/default/InboxProcessors/GenericInboxProcessor.php
+++ b/libraries/default/InboxProcessors/GenericInboxProcessor.php
@@ -5,7 +5,7 @@ use Cake\Utility\Inflector;
 use Cake\Validation\Validator;
 use Cake\View\ViewBuilder;
 
-interface GenericProcessorActionI
+interface GenericInboxProcessorActionI
 {
     public function create($requestData);
     public function process($requestID, $serverRequest, $inboxRequest);
diff --git a/libraries/default/InboxProcessors/LocalToolInboxProcessor.php b/libraries/default/InboxProcessors/LocalToolInboxProcessor.php
index 5bddbb0..296ce05 100644
--- a/libraries/default/InboxProcessors/LocalToolInboxProcessor.php
+++ b/libraries/default/InboxProcessors/LocalToolInboxProcessor.php
@@ -145,11 +145,13 @@ class LocalToolInboxProcessor extends GenericInboxProcessor
             'remote_tool' => [
                 'id' => $remote_tool_id,
                 'connector' => $connector->connectorName,
+                'name' => $requestData['tool_name'],
             ],
             'remote_org' => $remote_org,
             'remote_tool_data' => $requestData,
             'remote_cerebrate' => $remoteCerebrate,
             'connection' => $connection,
+            'connector' => [$connector->connectorName => $connector],
         ];
     }
 
@@ -171,7 +173,7 @@ class LocalToolInboxProcessor extends GenericInboxProcessor
     }
 }
 
-class IncomingConnectionRequestProcessor extends LocalToolInboxProcessor implements GenericProcessorActionI {
+class IncomingConnectionRequestProcessor extends LocalToolInboxProcessor implements GenericInboxProcessorActionI {
     public $action = 'IncomingConnectionRequest';
     protected $description;
 
@@ -212,7 +214,7 @@ class IncomingConnectionRequestProcessor extends LocalToolInboxProcessor impleme
         $connector = $this->getConnector($inboxRequest);
         if (!empty($requestData['is_discard'])) { // -> declined
             $connectorResult = $this->declineConnection($connector, $remoteCerebrate, $inboxRequest['data']); // Fire-and-forget?
-            $connectionSuccessfull = true;
+            $connectionSuccessfull = !empty($connectorResult['success']);
             $resultTitle = __('Could not sent declined message to `{0}`\'s  for {1}', $inboxRequest['origin'], $inboxRequest['local_tool_name']);
             $errors = [];
             if ($connectionSuccessfull) {
@@ -222,16 +224,20 @@ class IncomingConnectionRequestProcessor extends LocalToolInboxProcessor impleme
         } else {
             $errors = [];
             $connectorResult = [];
+            $thrownErrorMessage = '';
             try {
                 $connectorResult = $this->acceptConnection($connector, $remoteCerebrate, $inboxRequest['data']);
-                $connectionSuccessfull = true;
+                $connectionSuccessfull = !empty($connectorResult['success']);
             } catch (\Throwable $th) {
                 $connectionSuccessfull = false;
-                $errors = $th->getMessage();
+                $thrownErrorMessage = $th->getMessage();
             }
-            $resultTitle = __('Could not inter-connect `{0}`\'s {1}', $inboxRequest['origin'], $inboxRequest['local_tool_name']);
+            $resultTitle = $connectorResult['message'] ?? __('Could not inter-connect `{0}`\'s {1}', $inboxRequest['origin'], $inboxRequest['local_tool_name']);
+            $errors = $connectorResult['errors'] ?? $thrownErrorMessage;
             if ($connectionSuccessfull) {
                 $resultTitle = __('Interconnection for `{0}`\'s {1} created', $inboxRequest['origin'], $inboxRequest['local_tool_name']);
+            }
+            if ($connectionSuccessfull || !empty($connectorResult['placed_in_outbox'])) {
                 $this->discard($id, $inboxRequest);
             }
         }
@@ -252,7 +258,7 @@ class IncomingConnectionRequestProcessor extends LocalToolInboxProcessor impleme
     {
         $connection = $this->getConnection($requestData);
         $params = $this->genBroodParam($remoteCerebrate, $connection, $connector, $requestData);
-        $connectorResult = $connector->acceptConnection($params);
+        $connectorResult = $connector->acceptConnectionWrapper($params);
         $response = $this->sendAcceptedRequestToRemote($params, $connectorResult);
         return $response;
     }
@@ -261,7 +267,7 @@ class IncomingConnectionRequestProcessor extends LocalToolInboxProcessor impleme
     {
         $connection = $this->getConnection($requestData);
         $params = $this->genBroodParam($remoteCerebrate, $connection, $connector, $requestData);
-        $connectorResult = $connector->declineConnection($params);
+        $connectorResult = $connector->declineConnectionWrapper($params);
         $response = $this->sendDeclinedRequestToRemote($params, $connectorResult);
         return $response;
     }
@@ -269,21 +275,17 @@ class IncomingConnectionRequestProcessor extends LocalToolInboxProcessor impleme
     protected function sendAcceptedRequestToRemote($params, $connectorResult)
     {
         $response = $this->Broods->sendLocalToolAcceptedRequest($params, $connectorResult);
-        // change state if sending fails
-        // add the entry to the outbox if sending fails.
-        return $response->getJson();
+        return $response;
     }
 
     protected function sendDeclinedRequestToRemote($remoteCerebrate, $connectorResult)
     {
         $response = $this->Broods->sendLocalToolDeclinedRequest($params, $connectorResult);
-        // change state if sending fails
-        // add the entry to the outbox if sending fails.
-        return $response->getJson();
+        return $response;
     }
 }
 
-class AcceptedRequestProcessor extends LocalToolInboxProcessor implements GenericProcessorActionI {
+class AcceptedRequestProcessor extends LocalToolInboxProcessor implements GenericInboxProcessorActionI {
     public $action = 'AcceptedRequest';
     protected $description;
 
@@ -321,21 +323,22 @@ class AcceptedRequestProcessor extends LocalToolInboxProcessor implements Generi
 
         $errors = [];
         $connectorResult = [];
+        $thrownErrorMessage = '';
         try {
-            $connectorResult = $this->finalizeConnection($connector, $remoteCerebrate, $inboxRequest['data']);
-            $connectionSuccessfull = true;
+            $connectorResult = $this->finaliseConnection($connector, $remoteCerebrate, $inboxRequest['data']);
+            $connectionSuccessfull = !empty($connectorResult['success']);
         } catch (\Throwable $th) {
             $connectionSuccessfull = false;
             $errors = $th->getMessage();
         }
-        $connectionData = [];
         $resultTitle = __('Could not finalize inter-connection for `{0}`\'s {1}', $inboxRequest['origin'], $inboxRequest['local_tool_name']);
+        $errors = $connectorResult['errors'] ?? $thrownErrorMessage;
         if ($connectionSuccessfull) {
             $resultTitle = __('Interconnection for `{0}`\'s {1} finalized', $inboxRequest['origin'], $inboxRequest['local_tool_name']);
             $this->discard($id, $requestData);
         }
         return $this->genActionResult(
-            $connectionData,
+            $connectorResult,
             $connectionSuccessfull,
             $resultTitle,
             $errors
@@ -347,16 +350,18 @@ class AcceptedRequestProcessor extends LocalToolInboxProcessor implements Generi
         return parent::discard($id, $requestData);
     }
 
-    protected function finalizeConnection($connector, $remoteCerebrate, $requestData)
+    protected function finaliseConnection($connector, $remoteCerebrate, $requestData)
     {
         $connection = $this->getConnection($requestData);
         $params = $this->genBroodParam($remoteCerebrate, $connection, $connector, $requestData);
-        $connectorResult = $connector->finaliseConnection($params);
-        return $connectorResult;
+        $connectorResult = $connector->finaliseConnectionWrapper($params);
+        return [
+            'success' => true
+        ];
     }
 }
 
-class DeclinedRequestProcessor extends LocalToolInboxProcessor implements GenericProcessorActionI {
+class DeclinedRequestProcessor extends LocalToolInboxProcessor implements GenericInboxProcessorActionI {
     public $action = 'DeclinedRequest';
     protected $description;
 
diff --git a/libraries/default/InboxProcessors/ProposalInboxProcessor.php b/libraries/default/InboxProcessors/ProposalInboxProcessor.php
index baec684..01b6bb7 100644
--- a/libraries/default/InboxProcessors/ProposalInboxProcessor.php
+++ b/libraries/default/InboxProcessors/ProposalInboxProcessor.php
@@ -22,7 +22,7 @@ class ProposalInboxProcessor extends GenericInboxProcessor
     }
 }
 
-class ProposalEditProcessor extends ProposalInboxProcessor implements GenericProcessorActionI {
+class ProposalEditProcessor extends ProposalInboxProcessor implements GenericInboxProcessorActionI {
     public $action = 'ProposalEdit';
     protected $description;
 
diff --git a/libraries/default/InboxProcessors/SynchronisationInboxProcessor.php b/libraries/default/InboxProcessors/SynchronisationInboxProcessor.php
index b45afc4..2a243cd 100644
--- a/libraries/default/InboxProcessors/SynchronisationInboxProcessor.php
+++ b/libraries/default/InboxProcessors/SynchronisationInboxProcessor.php
@@ -22,7 +22,7 @@ class SynchronisationInboxProcessor extends GenericInboxProcessor
     }
 }
 
-class DataExchangeProcessor extends SynchronisationInboxProcessor implements GenericProcessorActionI {
+class DataExchangeProcessor extends SynchronisationInboxProcessor implements GenericInboxProcessorActionI {
     public $action = 'DataExchange';
     protected $description;
 
diff --git a/libraries/default/InboxProcessors/TemplateInboxProcessor.php.template b/libraries/default/InboxProcessors/TemplateInboxProcessor.php.template
index 832a588..ef8cf94 100644
--- a/libraries/default/InboxProcessors/TemplateInboxProcessor.php.template
+++ b/libraries/default/InboxProcessors/TemplateInboxProcessor.php.template
@@ -22,7 +22,7 @@ class SCOPE_InboxProcessor extends GenericInboxProcessor
     }
 }
 
-class SCOPE_ACTION_Processor extends ProposalInboxProcessor implements GenericProcessorActionI {
+class SCOPE_ACTION_Processor extends ProposalInboxProcessor implements GenericInboxProcessorActionI {
     public $action = 'ACTION';
     protected $description;
 
diff --git a/libraries/default/InboxProcessors/UserInboxProcessor.php b/libraries/default/InboxProcessors/UserInboxProcessor.php
index 2c830b1..074ce13 100644
--- a/libraries/default/InboxProcessors/UserInboxProcessor.php
+++ b/libraries/default/InboxProcessors/UserInboxProcessor.php
@@ -24,7 +24,7 @@ class UserInboxProcessor extends GenericInboxProcessor
     }
 }
 
-class RegistrationProcessor extends UserInboxProcessor implements GenericProcessorActionI {
+class RegistrationProcessor extends UserInboxProcessor implements GenericInboxProcessorActionI {
     public $action = 'Registration';
     protected $description;
 
diff --git a/libraries/default/InboxProcessors/templates/LocalTool/GenericRequest.php b/libraries/default/InboxProcessors/templates/LocalTool/GenericRequest.php
index 093cd80..845ba5e 100644
--- a/libraries/default/InboxProcessors/templates/LocalTool/GenericRequest.php
+++ b/libraries/default/InboxProcessors/templates/LocalTool/GenericRequest.php
@@ -97,7 +97,7 @@ $form = $this->element('genericElements/Form/genericForm', [
         ]
     ]
 ]);
-$localToolHTML = $this->fetch('content', sprintf('<div class="d-none">%s</div>', $form));
+$localToolHTML = $this->fetch('content', sprintf('<div class="d-none">%s</div><div class="form-error-container"></div>', $form));;
 
 $requestData = $this->Bootstrap->collapse(
     [
@@ -129,7 +129,12 @@ echo $this->Bootstrap->modal([
 <script>
     function accept(modalObject, tmpApi) {
         const $form = modalObject.$modal.find('form')
-        return tmpApi.postForm($form[0])
+        return tmpApi.postForm($form[0]).catch((errors) => {
+            const formHelper = new FormValidationHelper($form[0])
+            const errorHTMLNode = formHelper.buildValidationMessageNode(errors, true)
+            modalObject.$modal.find('div.form-error-container').append(errorHTMLNode)
+            return errors
+        })
     }
     function discard(modalObject, tmpApi) {
         const $form = modalObject.$modal.find('form')
diff --git a/libraries/default/InboxProcessors/templates/LocalTool/MispConnector/IncomingConnectionRequest.php b/libraries/default/InboxProcessors/templates/LocalTool/MispConnector/IncomingConnectionRequest.php
index 904d39d..52bfd82 100644
--- a/libraries/default/InboxProcessors/templates/LocalTool/MispConnector/IncomingConnectionRequest.php
+++ b/libraries/default/InboxProcessors/templates/LocalTool/MispConnector/IncomingConnectionRequest.php
@@ -18,4 +18,4 @@ $form = $this->element('genericElements/Form/genericForm', [
         ]
     ]
 ]);
-echo sprintf('<div class="d-none">%s</div>', $form);
\ No newline at end of file
+echo sprintf('<div class="d-none">%s</div><div class="form-error-container"></div>', $form);
\ No newline at end of file
diff --git a/libraries/default/OutboxProcessors/BroodsOutboxProcessor.php b/libraries/default/OutboxProcessors/BroodsOutboxProcessor.php
index a88ec1b..34a06e8 100644
--- a/libraries/default/OutboxProcessors/BroodsOutboxProcessor.php
+++ b/libraries/default/OutboxProcessors/BroodsOutboxProcessor.php
@@ -36,9 +36,34 @@ class BroodsOutboxProcessor extends GenericOutboxProcessor
             ->first();
         return $tool;
     }
+
+    protected function getConnector($className)
+    {
+        try {
+            $connectorClasses = $this->LocalTools->getConnectors($className);
+            if (!empty($connectorClasses)) {
+                $connector = array_values($connectorClasses)[0];
+            }
+        } catch (NotFoundException $e) {
+            $connector = null;
+        }
+        return $connector;
+    }
+
+    protected function setRemoteToolConnectionStatus(Object $brood, Object $outboxRequest, String $status): void
+    {
+        $connector = $this->getConnector($outboxRequest->data['remote_tool']['connector']);
+        $connection = $this->getLocalTool($outboxRequest->data['local_tool_id']);
+        $connectorParams = [
+            'connection' => $connection,
+            'remote_tool' => $outboxRequest->data['remote_tool'],
+            'remote_cerebrate' => $brood,
+        ];
+        $connector->remoteToolConnectionStatus($connectorParams, constant(get_class($connector) . '::' . $status));
+    }
 }
 
-class ResendFailedMessageProcessor extends BroodsOutboxProcessor implements GenericProcessorActionI {
+class ResendFailedMessageProcessor extends BroodsOutboxProcessor implements GenericOutboxProcessorActionI {
     public $action = 'ResendFailedMessage';
     protected $description;
 
@@ -74,12 +99,13 @@ class ResendFailedMessageProcessor extends BroodsOutboxProcessor implements Gene
 
     public function process($id, $requestData, $outboxRequest)
     {
+        $brood = $this->getIssuerBrood((int) $outboxRequest->data['brood_id']);
         if (!empty($requestData['is_delete'])) { // -> declined
             $success = true;
             $messageSucess = __('Message successfully deleted');
             $messageFail = '';
+            $this->setRemoteToolConnectionStatus($brood, $outboxRequest, 'STATE_CANCELLED');
         } else {
-            $brood = $this->getIssuerBrood((int) $outboxRequest->data['brood_id']);
             $url = $outboxRequest->data['url'];
             $dataSent = $outboxRequest->data['sent'];
             $dataSent['connectorName'] = 'MispConnector';
@@ -88,6 +114,11 @@ class ResendFailedMessageProcessor extends BroodsOutboxProcessor implements Gene
             $success = !empty($jsonReply['success']);
             $messageSuccess = __('Message successfully sent to `{0}`', $brood->name);
             $messageFail = __('Could not send message to `{0}`.', $brood->name);
+            if ($success) {
+                $this->setRemoteToolConnectionStatus($brood, $outboxRequest, $outboxRequest->data['next_connector_state']);
+            } else {
+                $this->setRemoteToolConnectionStatus($brood, $outboxRequest, 'STATE_SENDING_ERROR');
+            }
         }
         if ($success) {
             $this->discard($id, $requestData);
diff --git a/libraries/default/OutboxProcessors/GenericOutboxProcessor.php b/libraries/default/OutboxProcessors/GenericOutboxProcessor.php
index eb97d28..c230465 100644
--- a/libraries/default/OutboxProcessors/GenericOutboxProcessor.php
+++ b/libraries/default/OutboxProcessors/GenericOutboxProcessor.php
@@ -6,7 +6,7 @@ use Cake\Validation\Validator;
 use Cake\View\ViewBuilder;
 use Cake\Routing\Router;
 
-interface GenericProcessorActionI
+interface GenericOutboxProcessorActionI
 {
     public function create($requestData);
     public function process($requestID, $serverRequest, $outboxRequest);
diff --git a/libraries/default/OutboxProcessors/TemplateOutoxProcessor.php.template b/libraries/default/OutboxProcessors/TemplateOutoxProcessor.php.template
index 07dc21f..8c5a506 100644
--- a/libraries/default/OutboxProcessors/TemplateOutoxProcessor.php.template
+++ b/libraries/default/OutboxProcessors/TemplateOutoxProcessor.php.template
@@ -22,7 +22,7 @@ class SCOPE_OutboxProcessor extends GenericOutboxProcessor
     }
 }
 
-class SCOPE_ACTION_Processor extends ProposalOutboxProcessor implements GenericProcessorActionI {
+class SCOPE_ACTION_Processor extends ProposalOutboxProcessor implements GenericOutboxProcessorActionI {
     public $action = 'ACTION';
     protected $description;
 
diff --git a/libraries/default/OutboxProcessors/templates/Broods/ResendFailedMessage.php b/libraries/default/OutboxProcessors/templates/Broods/ResendFailedMessage.php
index 5775419..9962b15 100644
--- a/libraries/default/OutboxProcessors/templates/Broods/ResendFailedMessage.php
+++ b/libraries/default/OutboxProcessors/templates/Broods/ResendFailedMessage.php
@@ -31,7 +31,7 @@ $tools = sprintf(
     sprintf('<i class="%s fa-lg"></i>', $this->FontAwesome->getClass('long-arrow-alt-right')),
     sprintf('<span class="ml-2 d-inline-flex flex-column"><a href="%s" target="_blank" title="%s">%s</a><i style="font-size: medium;" class="text-center">%s</i></span>',
         sprintf('/localTools/broodTools/%s', h($request['data']['remote_tool']['id'])),
-        h($request['data']['remote_tool']['description']),
+        h($request['data']['remote_tool']['description'] ?? ''),
         h($request['data']['remote_tool']['name']),
         __('(remote tool)')
     )
diff --git a/src/Lib/default/local_tool_connectors/CommonConnectorTools.php b/src/Lib/default/local_tool_connectors/CommonConnectorTools.php
index 8999d6d..9fee5c5 100644
--- a/src/Lib/default/local_tool_connectors/CommonConnectorTools.php
+++ b/src/Lib/default/local_tool_connectors/CommonConnectorTools.php
@@ -16,6 +16,9 @@ class CommonConnectorTools
     const STATE_INITIAL = 'Request issued';
     const STATE_ACCEPT = 'Request accepted';
     const STATE_CONNECTED = 'Connected';
+    const STATE_SENDING_ERROR = 'Error while sending request';
+    const STATE_CANCELLED = 'Request cancelled';
+    const STATE_DECLINED = 'Request declined by remote';
 
     public function addExposedFunction(string $functionName): void
     {
diff --git a/src/Model/Table/BroodsTable.php b/src/Model/Table/BroodsTable.php
index 570a60b..b6e1a62 100644
--- a/src/Model/Table/BroodsTable.php
+++ b/src/Model/Table/BroodsTable.php
@@ -221,6 +221,7 @@ class BroodsTable extends AppTable
         $data['cerebrateURL'] = Configure::read('App.fullBaseUrl');
         $data['local_tool_id'] = $params['connection']['id'];
         $data['remote_tool_id'] = $params['remote_tool']['id'];
+        $data['tool_name'] = $params['connection']['name'];
         return $data;
     }
 
@@ -232,26 +233,46 @@ class BroodsTable extends AppTable
             $response = $this->sendRequest($params['remote_cerebrate'], $url, true, $data);
             $jsonReply = $response->getJson();
             if (empty($jsonReply['success'])) {
-                $jsonReply = $this->handleMessageNotCreated($params['remote_cerebrate'], $url, $data, 'LocalTool', 'IncomingConnectionRequest', $response, $params);
+                $jsonReply = $this->handleMessageNotCreated($params['remote_cerebrate'], $url, $data, 'LocalTool', 'IncomingConnectionRequest', $response, $params, 'STATE_INITIAL');
             }
         } catch (NotFoundException $e) {
-            $jsonReply = $this->handleSendingFailed($params['remote_cerebrate'], $url, $data, 'LocalTool', 'IncomingConnectionRequest', $e, $params);
+            $jsonReply = $this->handleSendingFailed($params['remote_cerebrate'], $url, $data, 'LocalTool', 'IncomingConnectionRequest', $e, $params, 'STATE_INITIAL');
         }
         return $jsonReply;
     }
 
-    public function sendLocalToolAcceptedRequest($params, $data): Response
+    public function sendLocalToolAcceptedRequest($params, $data): array
     {
         $url = '/inbox/createEntry/LocalTool/AcceptedRequest';
         $data = $this->injectRequiredData($params, $data);
-        return $this->sendRequest($params['remote_cerebrate'], $url, true, $data);
+        try {
+            $response = $this->sendRequest($params['remote_cerebrate'], $url, true, $data);
+            $jsonReply = $response->getJson();
+            if (empty($jsonReply['success'])) {
+                $jsonReply = $this->handleMessageNotCreated($params['remote_cerebrate'], $url, $data, 'LocalTool', 'AcceptedRequest', $response, $params, 'STATE_CONNECTED');
+            } else {
+                $this->setRemoteToolConnectionStatus($params, 'STATE_CONNECTED');
+            }
+        } catch (NotFoundException $e) {
+            $jsonReply = $this->handleSendingFailed($params['remote_cerebrate'], $url, $data, 'LocalTool', 'AcceptedRequest', $e, $params, 'STATE_CONNECTED');
+        }
+        return $jsonReply;
     }
 
-    public function sendLocalToolDeclinedRequest($params, $data): Response
+    public function sendLocalToolDeclinedRequest($params, $data): array
     {
         $url = '/inbox/createEntry/LocalTool/DeclinedRequest';
         $data = $this->injectRequiredData($params, $data);
-        return $this->sendRequest($params['remote_cerebrate'], $url, true, $data);
+        try {
+            $response = $this->sendRequest($params['remote_cerebrate'], $url, true, $data);
+            $jsonReply = $response->getJson();
+            if (empty($jsonReply['success'])) {
+                $jsonReply = $this->handleMessageNotCreated($params['remote_cerebrate'], $url, $data, 'LocalTool', 'AcceptedRequest', $response, $params, 'STATE_DECLINED');
+            }
+        } catch (NotFoundException $e) {
+            $jsonReply = $this->handleSendingFailed($params['remote_cerebrate'], $url, $data, 'LocalTool', 'AcceptedRequest', $e, $params, 'STATE_DECLINED');
+        }
+        return $jsonReply;
     }
     
     /**
@@ -260,17 +281,20 @@ class BroodsTable extends AppTable
      * @param  Object $response
      * @return array
      */
-    private function handleSendingFailed($brood, $url, $data, $model, $action, $e, $params): array
+    private function handleSendingFailed($brood, $url, $data, $model, $action, $e, $params, $next_connector_state): array
     {
+        $connector = $params['connector'][$params['remote_tool']['connector']];
         $reason = [
             'message' => __('Failed to send message to remote cerebrate. It has been placed in the outbox.'),
             'errors' => [$e->getMessage()],
         ];
-        $this->saveErrorInOutbox($brood, $url, $data, $reasonMessage, $params);
+        $outboxSaveResult = $this->saveErrorInOutbox($brood, $url, $data, $reasonMessage, $params, $next_connector_state);
+        $connector->remoteToolConnectionStatus($params, $connector::STATE_SENDING_ERROR);
         $creationResult = [
             'success' => false,
             'message' => $reason['message'],
             'errors' => $reason['errors'],
+            'placed_in_outbox' => !empty($outboxSaveResult['success']),
         ];
         return $creationResult;
     }
@@ -281,8 +305,9 @@ class BroodsTable extends AppTable
      * @param  Object $response
      * @return array
      */
-    private function handleMessageNotCreated($brood, $url, $data, $model, $action, $response, $params): array
+    private function handleMessageNotCreated($brood, $url, $data, $model, $action, $response, $params, $next_connector_state): array
     {
+        $connector = $params['connector'][$params['remote_tool']['connector']];
         $responseErrors = $response->getStringBody();
         if (!is_null($response->getJson())) {
             $responseErrors = $response->getJson()['errors'] ?? $response->getJson()['message'];
@@ -291,16 +316,18 @@ class BroodsTable extends AppTable
             'message' => __('Message rejected by the remote cerebrate. It has been placed in the outbox.'),
             'errors' => [$responseErrors],
         ];
-        $this->saveErrorInOutbox($brood, $url, $data, $reason, $model, $action, $params);
+        $outboxSaveResult = $this->saveErrorInOutbox($brood, $url, $data, $reason, $model, $action, $params, $next_connector_state);
+        $connector->remoteToolConnectionStatus($params, $connector::STATE_SENDING_ERROR);
         $creationResult = [
             'success' => false,
             'message' => $reason['message'],
             'errors' => $reason['errors'],
+            'placed_in_outbox' => !empty($outboxSaveResult['success']),
         ];
         return $creationResult;
     }
 
-    private function saveErrorInOutbox($brood, $url, $data, $reason, $model, $action, $params): array
+    private function saveErrorInOutbox($brood, $url, $data, $reason, $model, $action, $params, $next_connector_state): array
     {
         $this->OutboxProcessors = TableRegistry::getTableLocator()->get('OutboxProcessors');
         $processor = $this->OutboxProcessors->getProcessor('Broods', 'ResendFailedMessage');
@@ -312,6 +339,7 @@ class BroodsTable extends AppTable
                 'reason' => $reason,
                 'local_tool_id' => $params['connection']['id'],
                 'remote_tool' => $params['remote_tool'],
+                'next_connector_state' => $next_connector_state,
             ],
             'brood' => $brood,
             'model' => $model,
@@ -320,4 +348,10 @@ class BroodsTable extends AppTable
         $creationResult = $processor->create($entryData);
         return $creationResult;
     }
+
+    private function setRemoteToolConnectionStatus($params, String $status): void
+    {
+        $connector = $params['connector'][$params['remote_tool']['connector']];
+        $connector->remoteToolConnectionStatus($params, constant(get_class($connector) . '::' . $status));
+    }
 }
diff --git a/src/Model/Table/OutboxProcessorsTable.php b/src/Model/Table/OutboxProcessorsTable.php
index 6c6be33..da26692 100644
--- a/src/Model/Table/OutboxProcessorsTable.php
+++ b/src/Model/Table/OutboxProcessorsTable.php
@@ -25,7 +25,9 @@ class OutboxProcessorsTable extends AppTable
     public function initialize(array $config): void
     {
         parent::initialize($config);
-        $this->loadProcessors();
+        if (empty($this->outboxProcessors)) {
+            $this->loadProcessors();
+        }
     }
 
     public function getProcessor($scope, $action=null)