diff --git a/ironic/common/policy.py b/ironic/common/policy.py
index b8af77e9f6..647bd72609 100644
--- a/ironic/common/policy.py
+++ b/ironic/common/policy.py
@@ -1638,7 +1638,7 @@ conductor_policies = [
     policy.DocumentedRuleDefault(
         name='baremetal:conductor:get',
         check_str=SYSTEM_READER,
-        scope_types=['system'],
+        scope_types=['system', 'project'],
         description='Retrieve Conductor records',
         operations=[
             {'path': '/conductors', 'method': 'GET'},
@@ -1839,7 +1839,7 @@ deploy_template_policies = [
     policy.DocumentedRuleDefault(
         name='baremetal:deploy_template:get',
         check_str=SYSTEM_READER,
-        scope_types=['system'],
+        scope_types=['system', 'project'],
         description='Retrieve Deploy Template records',
         operations=[
             {'path': '/deploy_templates', 'method': 'GET'},
@@ -1851,7 +1851,7 @@ deploy_template_policies = [
     policy.DocumentedRuleDefault(
         name='baremetal:deploy_template:create',
         check_str=SYSTEM_ADMIN,
-        scope_types=['system'],
+        scope_types=['system', 'project'],
         description='Create Deploy Template records',
         operations=[{'path': '/deploy_templates', 'method': 'POST'}],
         deprecated_rule=deprecated_deploy_template_create
@@ -1859,7 +1859,7 @@ deploy_template_policies = [
     policy.DocumentedRuleDefault(
         name='baremetal:deploy_template:delete',
         check_str=SYSTEM_ADMIN,
-        scope_types=['system'],
+        scope_types=['system', 'project'],
         description='Delete Deploy Template records',
         operations=[
             {'path': '/deploy_templates/{deploy_template_ident}',
@@ -1870,7 +1870,7 @@ deploy_template_policies = [
     policy.DocumentedRuleDefault(
         name='baremetal:deploy_template:update',
         check_str=SYSTEM_ADMIN,
-        scope_types=['system'],
+        scope_types=['system', 'project'],
         description='Update Deploy Template records',
         operations=[
             {'path': '/deploy_templates/{deploy_template_ident}',
diff --git a/ironic/tests/unit/api/test_rbac_project_scoped.yaml b/ironic/tests/unit/api/test_rbac_project_scoped.yaml
index e52fe6a19c..37937c8703 100644
--- a/ironic/tests/unit/api/test_rbac_project_scoped.yaml
+++ b/ironic/tests/unit/api/test_rbac_project_scoped.yaml
@@ -3383,19 +3383,19 @@ owner_reader_cannot_get_conductors:
   path: '/v1/conductors'
   method: get
   headers: *owner_reader_headers
-  assert_status: 500
+  assert_status: 403
 
 lessee_reader_cannot_get_conductors:
   path: '/v1/conductors'
   method: get
   headers: *lessee_reader_headers
-  assert_status: 500
+  assert_status: 403
 
 third_party_admin_cannot_get_conductors:
   path: '/v1/conductors'
   method: get
   headers: *third_party_admin_headers
-  assert_status: 500
+  assert_status: 403
 
 # Allocations - https://docs.openstack.org/api-ref/baremetal/#allocations-allocations
 
@@ -3631,19 +3631,19 @@ owner_reader_cannot_get_deploy_templates:
   path: '/v1/deploy_templates'
   method: get
   headers: *owner_reader_headers
-  assert_status: 500
+  assert_status: 403
 
 lessee_reader_cannot_get_deploy_templates:
   path: '/v1/deploy_templates'
   method: get
   headers: *lessee_reader_headers
-  assert_status: 500
+  assert_status: 403
 
 third_party_admin_cannot_get_deploy_templates:
   path: '/v1/deploy_templates'
   method: get
   headers: *third_party_admin_headers
-  assert_status: 500
+  assert_status: 403
 
 third_party_admin_cannot_post_deploy_template:
   path: '/v1/deploy_templates'
@@ -3656,20 +3656,20 @@ third_party_admin_cannot_post_deploy_template:
         args: {}
         priority: 0
   headers: *third_party_admin_headers
-  assert_status: 500
+  assert_status: 403
 
 service_cannot_get_deploy_templates:
   path: '/v1/deploy_templates'
   method: get
   headers: *service_headers
-  assert_status: 500
+  assert_status: 403
 
 service_cannot_post_deploy_template:
   path: '/v1/deploy_templates'
   method: post
   body: *deploy_template
   headers: *service_headers
-  assert_status: 500
+  assert_status: 403
 
 # Chassis endpoints - https://docs.openstack.org/api-ref/baremetal/#chassis-chassis
 
diff --git a/releasenotes/notes/address-rbac-originating-500-errors-4b54977631a015d9.yaml b/releasenotes/notes/address-rbac-originating-500-errors-4b54977631a015d9.yaml
new file mode 100644
index 0000000000..e28b968635
--- /dev/null
+++ b/releasenotes/notes/address-rbac-originating-500-errors-4b54977631a015d9.yaml
@@ -0,0 +1,8 @@
+---
+fixes:
+  - |
+    Some of Ironic's API endpoints, when the new RBAC policy is being enforced,
+    were previously emitting *500* error codes when insufficent access rights were
+    being used, specifically because the policy required ``system`` scope. This
+    has been corrected, and the endpoints should now properly signal a *403* error
+    code if insufficient access rights are present for an authenticated requestor.