diff --git a/apps/authentication/api/v1/serializers/serializer.py b/apps/authentication/api/v1/serializers/serializer.py
index bce393b..c458e62 100644
--- a/apps/authentication/api/v1/serializers/serializer.py
+++ b/apps/authentication/api/v1/serializers/serializer.py
@@ -247,25 +247,49 @@ class OrganizationSerializer(serializers.ModelSerializer):
         # check organization type field
         # if is repeatable of type, organization will not be recreating
         org_type = attrs['type']
-        if not org_type.is_repeatable:
-            if org_type.org_type_field == 'PR' and self.Meta.model.objects.filter(
-                    type=org_type,
-                    province=attrs['province']
-            ).exists():
-                raise OrganizationTypeRepeatableException()
+        if not self.instance:
+            if not org_type.is_repeatable:
+                if org_type.org_type_field == 'PR' and self.Meta.model.objects.filter(
+                        type=org_type,
+                        province=attrs['province']
+                ).exists():
+                    raise OrganizationTypeRepeatableException()
 
-            if org_type.org_type_field == 'CI' and self.Meta.model.objects.filter(
-                    type=org_type,
-                    city=attrs['city']
-            ).exists():
-                raise OrganizationTypeRepeatableException()
+                if org_type.org_type_field == 'CI' and self.Meta.model.objects.filter(
+                        type=org_type,
+                        city=attrs['city']
+                ).exists():
+                    raise OrganizationTypeRepeatableException()
 
-            if org_type.org_type_field == 'CO' and self.Meta.model.objects.filter(
-                    type=org_type,
-                    province=attrs['province'],
-                    city=attrs['city']
-            ).exists():
-                raise OrganizationTypeRepeatableException()
+                if org_type.org_type_field == 'CO' and self.Meta.model.objects.filter(
+                        type=org_type,
+                        province=attrs['province'],
+                ).exists():
+                    raise OrganizationTypeRepeatableException()
+
+        # check organization type field when updating
+        elif self.instance:
+            if not org_type.is_repeatable:
+                if org_type.org_type_field == 'PR' and self.instance.province != attrs[
+                    'province'] and self.Meta.model.objects.filter(
+                        type=org_type,
+                        province=attrs['province'],
+                ).exists():
+                    raise OrganizationTypeRepeatableException()
+
+                if org_type.org_type_field == 'CI' and self.instance.city != attrs[
+                    'city'] and self.Meta.model.objects.filter(
+                        type=org_type,
+                        city=attrs['city'],
+                ).exists():
+                    raise OrganizationTypeRepeatableException()
+
+                if org_type.org_type_field == 'CO' and self.instance.province != attrs[
+                    'province'] and self.Meta.model.objects.filter(
+                        type=org_type,
+                        province=attrs['province'],
+                ).exists():
+                    raise OrganizationTypeRepeatableException()
 
         return attrs
 
diff --git a/logs/django_requests.log b/logs/django_requests.log
index ec0fdb7..7ce8f82 100644
--- a/logs/django_requests.log
+++ b/logs/django_requests.log
@@ -576,3 +576,7 @@ AssertionError: .validate() should return the validated data
 [2025-10-29 10:32:38,147] INFO django.utils.autoreload | IP: - | Path: - | Watching for file changes with StatReloader
 [2025-10-29 10:38:36,906] INFO django.utils.autoreload | IP: - | Path: - | D:\Project\Rasaddam_Backend\apps\authentication\api\v1\api.py changed, reloading.
 [2025-10-29 10:38:40,119] INFO django.utils.autoreload | IP: - | Path: - | Watching for file changes with StatReloader
+[2025-10-29 10:40:02,244] INFO django.server | IP: - | Path: - | "GET /auth/api/v1/organization-type/?org_type_field=CI HTTP/1.1" 200 675
+[2025-10-29 10:40:10,133] INFO django.server | IP: - | Path: - | "GET /auth/api/v1/organization-type/?org_type_field=PR HTTP/1.1" 200 400
+[2025-10-29 10:40:16,966] INFO django.server | IP: - | Path: - | "GET /auth/api/v1/organization-type/?org_type_field=CO HTTP/1.1" 200 276
+[2025-10-29 16:36:54,591] INFO django.utils.autoreload | IP: - | Path: - | D:\Project\Rasaddam_Backend\apps\authentication\api\v1\serializers\serializer.py changed, reloading.