diff --git a/Layout/default/Preorder/include/preorder-detail.php b/Layout/default/Preorder/include/preorder-detail.php
index b89670c7f..6b8a53efa 100644
--- a/Layout/default/Preorder/include/preorder-detail.php
+++ b/Layout/default/Preorder/include/preorder-detail.php
@@ -313,21 +313,25 @@
                   
                   <div class="col-6">
                     <h3>Workorder</h3>
-                    <table class="table table-sm table-striped">
-                      <tr>
-                        <th>Name</th>
-                        <td class="text-monospace"><?=$preorder->adb_wohneinheit->rimo_workorder->rimo_name?></td>
-                      </tr><tr>
-                        <th>External ID</th>
-                        <td class="text-monospace"><?=$preorder->adb_wohneinheit->rimo_workorder->rimo_id?></td>
-                      </tr><tr>
-                        <th>Status</th>
-                        <td><?=$preorder->adb_wohneinheit->rimo_workorder->rimo_status?></td>
-                      </tr><tr>
-                        <th>Erstellt</th>
-                        <td class="text-monospace"><?=($preorder->adb_wohneinheit->rimo_workorder->id) ? date("d.m.Y H:i:s", $preorder->adb_wohneinheit->rimo_workorder->create) : ""?></td>
-                      </tr>
-                    </table>
+                    <?php if(is_object($preorder->adb_wohneinheit->rimo_workorder) && $preorder->adb_wohneinheit->rimo_workorder->id): ?>
+                      <small id="preorder-detail-<?=$preorder->id?>-workorder-del"><a href="#" onclick="if(confirm('Achtung: Löscht die Workorder in thetool, aber NICHT in RIMO!')) return deleteWorkorder(<?=$preorder->id?>)" class="text-danger"><i class="far fa-times-circle"></i> Workorder löschen</a></small>
+                      <table class="table table-sm table-striped" id="preorder-detail-<?=$preorder->id?>-workorder">
+                        <tr>
+                          <th>Name</th>
+                          <td class="text-monospace"><?=$preorder->adb_wohneinheit->rimo_workorder->rimo_name?></td>
+                        </tr><tr>
+                          <th>External ID</th>
+                          <td class="text-monospace"><?=$preorder->adb_wohneinheit->rimo_workorder->rimo_id?></td>
+                        </tr><tr>
+                          <th>Status</th>
+                          <td><?=$preorder->adb_wohneinheit->rimo_workorder->rimo_status?></td>
+                        </tr><tr>
+                          <th>Erstellt</th>
+                          <td class="text-monospace"><?=(is_object($preorder->adb_wohneinheit->rimo_workorder)) ? date("d.m.Y H:i:s", $preorder->adb_wohneinheit->rimo_workorder->create) : ""?></td>
+                        </tr>
+                      </table>
+                    <?php endif; ?>
+                    
                   </div>
                   
                   
@@ -402,4 +406,29 @@
     },
     'json');
   }
+  
+  function deleteWorkorder(pid) {
+    console.log("in delete workorder");
+    if(!Number.isInteger(pid) || pid < 1) {
+      return false;
+    }
+    
+    $.post("<?=self::getUrl("Preorder","Api")?>",
+    {
+      'do': "deleteWorkorder",
+      id: pid,
+    },
+    function(success) {
+      if(success.status == "OK") {
+        $("#preorder-detail-" + success.result.id + "-workorder td").each(function() {
+          $(this).html("<em class='text-monospace'>--gelöscht--</em>");
+        });
+        
+        $("#preorder-detail-" + success.result.id + "-workorder-del").remove();
+      }
+    },
+    'json');
+    
+    return false;
+  }
 </script>
\ No newline at end of file
diff --git a/application/ADBWohneinheit/ADBWohneinheit.php b/application/ADBWohneinheit/ADBWohneinheit.php
index 8fa0fcf93..c65271c64 100644
--- a/application/ADBWohneinheit/ADBWohneinheit.php
+++ b/application/ADBWohneinheit/ADBWohneinheit.php
@@ -168,7 +168,10 @@ class ADBWohneinheit extends mfBaseModel {
       }
       
       if($name == "rimo_workorder") {
-        $this->rimo_workorder = RimoWorkorderModel::getFirst(['adb_wohneinheit_id' => $this->id]);
+        $this->rimo_workorder = new RimoWorkorder();
+        if($this->id) {
+          $this->rimo_workorder = RimoWorkorderModel::getFirst(['adb_wohneinheit_id' => $this->id]);
+        }
         return $this->rimo_workorder;
       }
       
diff --git a/application/ADBWohneinheit/ADBWohneinheitModel.php b/application/ADBWohneinheit/ADBWohneinheitModel.php
index 211ab60d2..e2eb033b7 100644
--- a/application/ADBWohneinheit/ADBWohneinheitModel.php
+++ b/application/ADBWohneinheit/ADBWohneinheitModel.php
@@ -54,7 +54,7 @@ class ADBWohneinheitModel {
             ORDER BY hausnummer_id,block,stiege,LENGTH(stock),stock,LENGTH(tuer),tuer,num
             LIMIT 1";
     
-    mfLoghandler::singleton()->debug($sql);
+    //mfLoghandler::singleton()->debug($sql);
     $res = $db->query($sql);
     if($db->num_rows($res)) {
       $data = $db->fetch_object($res);
@@ -96,7 +96,7 @@ class ADBWohneinheitModel {
             ) as tbl
            ";
     
-    mfLoghandler::singleton()->debug($sql);
+    //mfLoghandler::singleton()->debug($sql);
     $res = $db->query($sql);
     if($db->num_rows($res)) {
       $data = $db->fetch_object($res);
diff --git a/application/OpenAccessId/OpenAccessIdModel.php b/application/OpenAccessId/OpenAccessIdModel.php
index 1149c4b3e..fb170fba1 100644
--- a/application/OpenAccessId/OpenAccessIdModel.php
+++ b/application/OpenAccessId/OpenAccessIdModel.php
@@ -82,7 +82,7 @@ class OpenAccessIdModel {
     if(!$oaid) return null;
     
     $where = self::getSqlFilter(["oaid" => $oaid]);
-    mfLoghandler::singleton()->debug($where);
+    //mfLoghandler::singleton()->debug($where);
     $res = $db->select("OpenAccessId", "*", "$where ORDER BY id");
     if($db->num_rows($res)) {
       $data = $db->fetch_object($res);
diff --git a/application/Preorder/Preorder.php b/application/Preorder/Preorder.php
index 8b06eb9f8..7ba96d362 100644
--- a/application/Preorder/Preorder.php
+++ b/application/Preorder/Preorder.php
@@ -359,7 +359,11 @@ class Preorder extends mfBaseModel {
     $a['cifurl'] = $this->cifurl;
     $a['oaid'] = $this->oaid;
     $a['extref'] = $this->extref;
+    $a['orderDate'] = ($this->order_date) ? date("Y-m-d",$this->order_date) : null;
     $a['status'] = $this->getProperty("status")->getApiArray();
+    $a['ciftoken'] = ($this->ciftoken) ? $this->ciftoken : null;
+    $a['cifurl'] = ($this->cifurl) ? $this->cifurl : null;
+    $a['installationDate'] = ($this->installation_date) ? date("c", $this->installation_date) : null;
     $a['connectionType'] = $this->connection_type;
     $a['connectionCount'] = ($this->connection_count) ? (int)$this->connection_count : 1;
     $a['isAdditionalOrder'] = ($this->is_additional_order) ? true : false;
diff --git a/application/Preorder/PreorderController.php b/application/Preorder/PreorderController.php
index edb2c4640..09547595f 100644
--- a/application/Preorder/PreorderController.php
+++ b/application/Preorder/PreorderController.php
@@ -797,6 +797,9 @@ class PreorderController extends mfBaseController {
       case "updateStatus":
         $return = $this->updateStatusApi();
         break;
+      case "deleteWorkorder":
+        $return = $this->deleteWorkorderApi();
+        break;
       default:
         $return = false;
     }
@@ -997,4 +1000,33 @@ class PreorderController extends mfBaseController {
     return ["message" => "Status saved successfully", "id" => $preorder_id, "update" => $update];
   }
   
+  private function deleteWorkorderApi() {
+    if(!$this->me->is("Admin")) {
+      return false;
+    }
+    
+    $preorder_id = $this->request->id;
+    
+    if(!is_numeric($preorder_id) || $preorder_id < 1) {
+      return false;
+    }
+    
+    $preorder = new Preorder($preorder_id);
+    if(!$preorder->id) {
+      return false;
+    }
+    
+    if(!$preorder->adb_wohneinheit_id) {
+      return false;
+    }
+    
+    $workorder = RimoWorkorderModel::getFirst(["adb_wohneinheit_id" => $preorder->adb_wohneinheit_id]);
+    if(!$workorder) {
+      return false;
+    }
+    
+    $workorder->delete();
+    return ["Message" => "Workorder deleted successfully", "id" => $preorder->id];
+  }
+  
 }
\ No newline at end of file
diff --git a/application/RimoWorkorder/RimoWorkorderModel.php b/application/RimoWorkorder/RimoWorkorderModel.php
index 3ab2ec151..4ed8ca453 100644
--- a/application/RimoWorkorder/RimoWorkorderModel.php
+++ b/application/RimoWorkorder/RimoWorkorderModel.php
@@ -54,7 +54,7 @@ class RimoWorkorderModel {
     $db = FronkDB::singleton();
     
     $where = self::getSqlFilter($filter);
-    mfLoghandler::singleton()->debug($where);
+    //mfLoghandler::singleton()->debug($where);
     $res = $db->select("RimoWorkorder", "*", "$where ORDER BY `create`");
     if($db->num_rows($res)) {
       $data = $db->fetch_object($res);
diff --git a/db/migrations/20231109131925_preorder_add_installation_and_order_dates.php b/db/migrations/20231109131925_preorder_add_installation_and_order_dates.php
new file mode 100644
index 000000000..4e3959860
--- /dev/null
+++ b/db/migrations/20231109131925_preorder_add_installation_and_order_dates.php
@@ -0,0 +1,33 @@
+<?php
+declare(strict_types=1);
+
+use Phinx\Migration\AbstractMigration;
+
+final class PreorderAddInstallationAndOrderDates extends AbstractMigration
+{
+    public function up(): void
+    {
+        if($this->getEnvironment() == "thetool") {
+          $table = $this->table("Preorder");
+          $table->addColumn("installation_date", "integer", ["null" => true, "default" => null, "after" => "submit_request"]);
+          $table->addColumn("order_date", "integer", ["null" => true, "default" => null, "after" => "note"]);
+          $table->update();
+        }
+        
+        if($this->getEnvironment() == "addressdb") {
+          
+        }
+    }
+
+    public function down(): void
+    {
+        if($this->getEnvironment() == "thetool") {
+          $this->table("Preorder")->removeColumn("installation_date")->save();
+          $this->table("Preorder")->removeColumn("order_date")->save();
+        }
+        
+        if($this->getEnvironment() == "addressdb") {
+          
+        }
+    }
+}
diff --git a/public/docs/preorder-api.yaml b/public/docs/preorder-api.yaml
index 73f647739..c974e034a 100644
--- a/public/docs/preorder-api.yaml
+++ b/public/docs/preorder-api.yaml
@@ -760,7 +760,7 @@ paths:
           description: Unauthorized
         '404':
           description: Vorbestellung nicht gefunden
-  /preorder/{id}/inhouseInstallationFinished:
+  /preorder/{id}/serviceActivated:
     post:
       tags:
         - preorder
@@ -1137,6 +1137,11 @@ components:
         extref:
           type: string
           description: Providereigener Identifikationsstring. Wird unverändert gespeichert und kann statt `code` in `GET /preorder` und `DELETE /preorder` angegeben werden. **Darf nicht mit Dateiendung wie z.B. `.json`, `.csv` enden, da diese als Ausgabeformat interpretiert werden können**
+        orderDate:
+          type: string
+          format: date
+          description: Bestell- oder Vertragsdatum ISO 8601 Format
+          example: "2023-02-01"
         preorderType:
           type: string
           enum: [interest, provision, order]
@@ -1402,6 +1407,11 @@ components:
         extref:
           type: string
           description: Providereigener Identifikationsstring. Wird unverändert gespeichert und kann statt `code` in `GET /preorder` und `DELETE /preorder` angegeben werden. **Darf nicht mit Dateiendung wie z.B. `.json`, `.csv` enden, da diese als Ausgabeformat interpretiert werden können**
+        orderDate:
+          type: string
+          format: date
+          description: Bestell- oder Vertragsdatum ISO 8601 Format
+          example: "2023-02-01"
         status:
           type: object
           properties:
@@ -1421,6 +1431,11 @@ components:
           type: string
           description: Customer Installation Feedback Url
           example: "https://pro.ichwillglasfaser.at/ClientSubmit/finishedInstallationWork?c=XArjnWQXGq4a8JWF"
+        installationDate:
+          type: string
+          format: date-time
+          description: Installationstermin in ISO 8601 Format
+          example: "2023-02-01T00:00:00+01:00"
         connectionType:
           type: string
           enum: [single-dwelling, multi-dwelling, apartment-building, apartment, business]