diff --git a/rbac/management/querysets.py b/rbac/management/querysets.py
index 538640b1..d5a67eca 100644
--- a/rbac/management/querysets.py
+++ b/rbac/management/querysets.py
@@ -36,6 +36,7 @@
     policies_for_principal,
     queryset_by_id,
     roles_for_principal,
+    validate_and_get_key,
 )
 from rest_framework import permissions, serializers
 from rest_framework.request import Request
@@ -97,7 +98,7 @@ def _gather_group_querysets(request, args, kwargs):
     """Decide which groups to provide for request."""
     username = request.query_params.get("username")
 
-    scope = request.query_params.get(SCOPE_KEY, ORG_ID_SCOPE)
+    scope = validate_and_get_key(request.query_params, SCOPE_KEY, VALID_SCOPES, ORG_ID_SCOPE)
     if scope != ORG_ID_SCOPE and not username:
         return get_object_principal_queryset(request, scope, Group)
 
@@ -149,7 +150,7 @@ def annotate_roles_with_counts(queryset):
 
 def get_role_queryset(request) -> QuerySet:
     """Obtain the queryset for roles."""
-    scope = request.query_params.get(SCOPE_KEY, ORG_ID_SCOPE)
+    scope = validate_and_get_key(request.query_params, SCOPE_KEY, VALID_SCOPES, ORG_ID_SCOPE)
     public_tenant = Tenant.objects.get(tenant_name="public")
     base_query = annotate_roles_with_counts(Role.objects.prefetch_related("access")).filter(
         tenant__in=[request.tenant, public_tenant]
@@ -213,7 +214,7 @@ def get_role_queryset(request) -> QuerySet:
 
 def get_policy_queryset(request):
     """Obtain the queryset for policies."""
-    scope = request.query_params.get(SCOPE_KEY, ORG_ID_SCOPE)
+    scope = validate_and_get_key(request.query_params, SCOPE_KEY, VALID_SCOPES, ORG_ID_SCOPE)
     if scope != ORG_ID_SCOPE:
         return get_object_principal_queryset(request, scope, Policy)
 
diff --git a/rbac/management/role/serializer.py b/rbac/management/role/serializer.py
index 7ba142f4..3caff09b 100644
--- a/rbac/management/role/serializer.py
+++ b/rbac/management/role/serializer.py
@@ -20,12 +20,12 @@
 from management.group.model import Group
 from management.notifications.notification_handlers import role_obj_change_notification_handler
 from management.serializer_override_mixin import SerializerCreateOverrideMixin
-from management.utils import filter_queryset_by_tenant, get_principal
+from management.utils import filter_queryset_by_tenant, get_principal, validate_and_get_key
 from rest_framework import serializers
 
 from api.models import Tenant
 from .model import Access, Permission, ResourceDefinition, Role
-from ..querysets import PRINCIPAL_SCOPE
+from ..querysets import ORG_ID_SCOPE, PRINCIPAL_SCOPE, SCOPE_KEY, VALID_SCOPES
 
 ALLOWED_OPERATIONS = ["in", "equal"]
 FILTER_FIELDS = {"key", "value", "operation"}
@@ -329,7 +329,7 @@ def obtain_applications(obj):
 
 def obtain_groups_in(obj, request):
     """Shared function to get the groups the roles is in."""
-    scope_param = request.query_params.get("scope")
+    scope_param = validate_and_get_key(request.query_params, SCOPE_KEY, VALID_SCOPES, ORG_ID_SCOPE)
     username_param = request.query_params.get("username")
     policy_ids = list(obj.policies.values_list("id", flat=True))
 
diff --git a/tests/management/group/test_view.py b/tests/management/group/test_view.py
index 4e849ed0..36351ec1 100644
--- a/tests/management/group/test_view.py
+++ b/tests/management/group/test_view.py
@@ -2720,7 +2720,7 @@ def setUp(self):
             "permission."
         )
         self.invalid_value_for_scope_query_param = (
-            "scope query parameter value foo is invalid. [org_id, principal] are valid inputs."
+            "scope query parameter value 'foo' is invalid. ['org_id', 'principal'] are valid inputs."
         )
         self.user_access_admin_role_err_message = (
             "Non org admin users are not allowed to add RBAC role with higher than 'read' permission into groups."
@@ -4771,7 +4771,7 @@ def test_read_group_with_username_and_scope_params(self, mock):
 
         # Adding the 'scope' param doesn't affect the response because the 'scope' param is ignored
         # when query contains the 'username' param
-        for scope in ("org_id", "principal", "foo"):
+        for scope in ("org_id", "principal"):
             url_with_scope = url + f"&scope={scope}"
             response = client.get(url_with_scope, format="json", **self.headers_user_based_principal)
             self.assertEqual(response.status_code, status.HTTP_200_OK)