diff --git a/idhub/admin/tables.py b/idhub/admin/tables.py
index 74dcc6f..51df7e8 100644
--- a/idhub/admin/tables.py
+++ b/idhub/admin/tables.py
@@ -229,7 +229,7 @@ class TemplateTable(tables.Table):
     delete_template_code = """<a class="text-danger"
                             href="javascript:void()"
                             data-bs-toggle="modal"
-                            data-bs-target="#confirm-delete-{{ record.id }}"
+                            data-bs-target="#confirm-delete-{}"
                             title="Remove"
                             ><i class="bi bi-trash"></i></a>"""
     delete_schema = tables.TemplateColumn(template_code=delete_template_code,
@@ -253,6 +253,13 @@ class TemplateTable(tables.Table):
 
         return (queryset, True)
 
+    def render_delete_schema(self, value, record):
+        if not record.has_credentials:
+            tmpl = self.delete_template_code.format(record.id)
+            return format_html(tmpl)
+        else:
+            return ""
+
     class Meta:
         model = Schemas
         template_name = "idhub/custom_table.html"
diff --git a/idhub/admin/views.py b/idhub/admin/views.py
index e2dd58f..a030f99 100644
--- a/idhub/admin/views.py
+++ b/idhub/admin/views.py
@@ -870,7 +870,11 @@ class SchemasDeleteView(SchemasMix):
     def get(self, request, *args, **kwargs):
         self.check_valid_user()
         self.pk = kwargs['pk']
-        self.object = get_object_or_404(Schemas, pk=self.pk)
+        issued = VerificableCredential.Status.ISSUED
+        self.object = get_object_or_404(
+            Schemas.objects.exclude(vcredentials__status=issued),
+            pk=self.pk,
+        )
         self.object.delete()
 
         return redirect('idhub:admin_schemas')
diff --git a/idhub/models.py b/idhub/models.py
index cc77874..1072e26 100644
--- a/idhub/models.py
+++ b/idhub/models.py
@@ -527,6 +527,11 @@ class Schemas(models.Model):
 
         return name
 
+    @property
+    def has_credentials(self):
+        return self.vcredentials.filter(
+            status=VerificableCredential.Status.ISSUED).exists()
+
     def _get_language_code(self, request=None):
         language_code = settings.LANGUAGE_CODE
         if request:
diff --git a/idhub/templates/idhub/admin/schemas.html b/idhub/templates/idhub/admin/schemas.html
index 543c89b..6b0e816 100644
--- a/idhub/templates/idhub/admin/schemas.html
+++ b/idhub/templates/idhub/admin/schemas.html
@@ -13,6 +13,7 @@
 </div>
 <!-- Modal -->
 {% for schema in object_list %}
+{% if not schema.has_credentials %}
 <div class="modal" id="confirm-delete-{{ schema.id }}" tabindex="-1" aria-labelledby="exampleModalLabel" aria-hidden="true">
   <div class="modal-dialog">
     <div class="modal-content">
@@ -30,5 +31,6 @@
     </div>
   </div>
 </div>
+{% endif %}
 {% endfor %}
 {% endblock %}