diff --git a/.idea/atdb-ldv.iml b/.idea/atdb-ldv.iml
index 5f7c653954fce103ff3e9cc03747ffdfa123559a..2ab3c03993ecfb0732bf60b1d5b642f09a14154a 100644
--- a/.idea/atdb-ldv.iml
+++ b/.idea/atdb-ldv.iml
@@ -4,7 +4,7 @@
     <content url="file://$MODULE_DIR$">
       <excludeFolder url="file://$MODULE_DIR$/venv" />
     </content>
-    <orderEntry type="jdk" jdkName="Python 3.9 (atdb-ldv) (2)" jdkType="Python SDK" />
+    <orderEntry type="jdk" jdkName="Python 3.9 (atdb-ldv)" jdkType="Python SDK" />
     <orderEntry type="sourceFolder" forTests="false" />
   </component>
   <component name="PyDocumentationSettings">
diff --git a/.idea/misc.xml b/.idea/misc.xml
index 473a06f78d2798affb77f52a03542ae3b9dde05c..b69afdb89884dd81772c071f7da9af8a4225b6de 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
-  <component name="ProjectRootManager" version="2" project-jdk-name="Python 3.9 (atdb-ldv) (2)" project-jdk-type="Python SDK" />
+  <component name="ProjectRootManager" version="2" project-jdk-name="Python 3.9 (atdb-ldv)" project-jdk-type="Python SDK" />
   <component name="PyCharmProfessionalAdvertiser">
     <option name="shown" value="true" />
   </component>
diff --git a/atdb/taskdatabase/models.py b/atdb/taskdatabase/models.py
index 27adf8c94fb28f492c4523e2973641de817c35d3..18323dc554eec17e6f2b176d3c3dca52e969186f 100644
--- a/atdb/taskdatabase/models.py
+++ b/atdb/taskdatabase/models.py
@@ -59,7 +59,6 @@ def convert_summary_to_list_for_template(task):
     try:
         summary = task.quality_json['summary']
 
-
     except Exception as err:
         pass
 
@@ -98,17 +97,15 @@ class Task(models.Model):
     size_processed = models.PositiveBigIntegerField(default=0, null=True, blank=True)
     total_processing_time = models.IntegerField(default=0, null=True, blank=True)
 
-
     # relationships
     workflow = models.ForeignKey(Workflow, related_name='tasks', on_delete=models.SET_NULL, null=True, blank=True)
     predecessor = models.ForeignKey('self', related_name='successors', on_delete=models.SET_NULL, null=True, blank=True)
 
     def __str__(self):
-
         return str(self.id) + ' - (' + self.task_type + ') - ' + str(self.sas_id)
 
     # this translates a view-name (from urls.py) back to a url, to avoid hardcoded url's in the html templates
-    # bad : <td><a href="/atdb/taaks/{{ task.id }}/" target="_blank">{{ task.taskID }} </a> </td>
+    # bad : <td><a href="/atdb/tasks/{{ task.id }}/" target="_blank">{{ task.taskID }} </a> </td>
     # good: <td><a href="{{ task.get_absolute_url }}" target="_blank">{{ task.taskID }} </a> </td>
     def get_absolute_url(self):
         return reverse('task-detail-view-api', kwargs={'pk': self.pk})
@@ -122,7 +119,6 @@ class Task(models.Model):
 
     @property
     def has_quality(self):
-
         try:
             quality = self.outputs['quality']
             return True
@@ -137,7 +133,6 @@ class Task(models.Model):
 
     @property
     def has_plots(self):
-
         try:
             quality = self.outputs['quality']
             plots = quality['plots']
@@ -160,7 +155,6 @@ class Task(models.Model):
 
     @property
     def quality_json(self):
-
         try:
             return self.outputs['quality']
         except:
@@ -224,13 +218,18 @@ class Task(models.Model):
         except:
             return None
 
-
+    @property
     def path_to_lta(self):
         try:
             return self.archive['path_to_lta']
         except:
             return None
 
+    @property
+    def sasid_has_same_status(self):
+        nr_of_statusses = Task.objects.filter(sas_id=self.sas_id).distinct("status").count()
+        return nr_of_statusses == 1
+
 class LogEntry(models.Model):
     cpu_cycles = models.IntegerField(null=True,blank=True)
     wall_clock_time = models.IntegerField(null=True,blank=True)
diff --git a/atdb/taskdatabase/templates/taskdatabase/index.html b/atdb/taskdatabase/templates/taskdatabase/index.html
index baa9888b398cee0bdf53b2bb96d09e3a987aac2f..4522887d05320dc18e2db030b4517a0f1ce63494 100644
--- a/atdb/taskdatabase/templates/taskdatabase/index.html
+++ b/atdb/taskdatabase/templates/taskdatabase/index.html
@@ -34,7 +34,7 @@
         {% include 'taskdatabase/pagination.html' %}
        </div>
     </div>
-    <p class="footer"> Version 17 Februari 2023
+    <p class="footer"> Version 21 Februari 2023
 
 </div>
 
diff --git a/atdb/taskdatabase/templates/taskdatabase/validation/validation_buttons.html b/atdb/taskdatabase/templates/taskdatabase/validation/validation_buttons.html
index 70b6c62fa718dc18bd557e7b7ff032953056c7c8..42ba24d14935d00f2d9443bf8f4d932e43c26056 100644
--- a/atdb/taskdatabase/templates/taskdatabase/validation/validation_buttons.html
+++ b/atdb/taskdatabase/templates/taskdatabase/validation/validation_buttons.html
@@ -1,3 +1,12 @@
+
+ {% if task.sasid_has_same_status %}
     <a href="{% url 'task-validate-view' task.pk 'poor' 'validated' my_tasks.number %}" class="btn btn-danger btn-sm" role="button"><i class="fas fa-check"></i> P</a>
+ {% endif %}
+
+ {% if task.sasid_has_same_status %}
     <a href="{% url 'task-validate-view' task.pk 'moderate' 'validated' my_tasks.number %}" class="btn btn-warning btn-sm" role="button"><i class="fas fa-check"></i> M</a>
+ {% endif %}
+
+ {% if task.sasid_has_same_status %}
     <a href="{% url 'task-validate-view' task.pk 'good' 'validated' my_tasks.number %}" class="btn btn-success btn-sm" role="button"><i class="fas fa-check"></i> G</a>
+ {% endif %}