diff --git a/apps/emqx_auth_http/src/emqx_authn_http_schema.erl b/apps/emqx_auth_http/src/emqx_authn_http_schema.erl
index 1eaac6378..9464b0aaf 100644
--- a/apps/emqx_auth_http/src/emqx_authn_http_schema.erl
+++ b/apps/emqx_auth_http/src/emqx_authn_http_schema.erl
@@ -27,7 +27,8 @@
     validations/0,
     desc/1,
     refs/0,
-    select_union_member/1
+    select_union_member/1,
+    namespace/0
 ]).
 
 -define(NOT_EMPTY(MSG), emqx_resource_validator:not_empty(MSG)).
@@ -38,6 +39,8 @@
     })
 ).
 
+namespace() -> "authn".
+
 refs() ->
     [?R_REF(http_get), ?R_REF(http_post)].
 
diff --git a/apps/emqx_auth_http/src/emqx_authz_http_schema.erl b/apps/emqx_auth_http/src/emqx_authz_http_schema.erl
index 18ec23757..5f9af846b 100644
--- a/apps/emqx_auth_http/src/emqx_authz_http_schema.erl
+++ b/apps/emqx_auth_http/src/emqx_authz_http_schema.erl
@@ -26,7 +26,8 @@
     fields/1,
     desc/1,
     source_refs/0,
-    select_union_member/1
+    select_union_member/1,
+    namespace/0
 ]).
 
 -export([
@@ -38,6 +39,8 @@
 
 -import(emqx_schema, [mk_duration/2]).
 
+namespace() -> "authz".
+
 type() -> ?AUTHZ_TYPE.
 
 source_refs() ->
diff --git a/apps/emqx_auth_ldap/src/emqx_authn_ldap_bind_schema.erl b/apps/emqx_auth_ldap/src/emqx_authn_ldap_bind_schema.erl
index 9a21766e3..580673d85 100644
--- a/apps/emqx_auth_ldap/src/emqx_authn_ldap_bind_schema.erl
+++ b/apps/emqx_auth_ldap/src/emqx_authn_ldap_bind_schema.erl
@@ -25,9 +25,12 @@
     fields/1,
     desc/1,
     refs/0,
-    select_union_member/1
+    select_union_member/1,
+    namespace/0
 ]).
 
+namespace() -> "authn".
+
 refs() ->
     [?R_REF(ldap_bind)].
 
diff --git a/apps/emqx_auth_ldap/src/emqx_authz_ldap_schema.erl b/apps/emqx_auth_ldap/src/emqx_authz_ldap_schema.erl
index 491b0debf..e6a060f42 100644
--- a/apps/emqx_auth_ldap/src/emqx_authz_ldap_schema.erl
+++ b/apps/emqx_auth_ldap/src/emqx_authz_ldap_schema.erl
@@ -26,9 +26,12 @@
     fields/1,
     desc/1,
     source_refs/0,
-    select_union_member/1
+    select_union_member/1,
+    namespace/0
 ]).
 
+namespace() -> "authz".
+
 type() -> ?AUTHZ_TYPE.
 
 fields(ldap) ->
diff --git a/apps/emqx_auth_mnesia/src/emqx_authn_mnesia_schema.erl b/apps/emqx_auth_mnesia/src/emqx_authn_mnesia_schema.erl
index bb5ccfe1a..373d95fc8 100644
--- a/apps/emqx_auth_mnesia/src/emqx_authn_mnesia_schema.erl
+++ b/apps/emqx_auth_mnesia/src/emqx_authn_mnesia_schema.erl
@@ -25,9 +25,12 @@
     fields/1,
     desc/1,
     refs/1,
-    select_union_member/2
+    select_union_member/2,
+    namespace/0
 ]).
 
+namespace() -> "authn".
+
 refs(api_write) ->
     [?R_REF(builtin_db_api)];
 refs(_) ->
diff --git a/apps/emqx_auth_mnesia/src/emqx_authz_mnesia_schema.erl b/apps/emqx_auth_mnesia/src/emqx_authz_mnesia_schema.erl
index cab544bf7..4d467397e 100644
--- a/apps/emqx_auth_mnesia/src/emqx_authz_mnesia_schema.erl
+++ b/apps/emqx_auth_mnesia/src/emqx_authz_mnesia_schema.erl
@@ -26,9 +26,12 @@
     fields/1,
     desc/1,
     source_refs/0,
-    select_union_member/1
+    select_union_member/1,
+    namespace/0
 ]).
 
+namespace() -> "authz".
+
 type() -> ?AUTHZ_TYPE.
 
 fields(builtin_db) ->
diff --git a/apps/emqx_auth_mongodb/src/emqx_authn_mongodb_schema.erl b/apps/emqx_auth_mongodb/src/emqx_authn_mongodb_schema.erl
index 8f76bedc2..53c6a6a10 100644
--- a/apps/emqx_auth_mongodb/src/emqx_authn_mongodb_schema.erl
+++ b/apps/emqx_auth_mongodb/src/emqx_authn_mongodb_schema.erl
@@ -25,9 +25,12 @@
     fields/1,
     desc/1,
     refs/0,
-    select_union_member/1
+    select_union_member/1,
+    namespace/0
 ]).
 
+namespace() -> "authn".
+
 refs() ->
     [
         ?R_REF(mongo_single),
diff --git a/apps/emqx_auth_mongodb/src/emqx_authz_mongodb_schema.erl b/apps/emqx_auth_mongodb/src/emqx_authz_mongodb_schema.erl
index aff399e68..ee20b962e 100644
--- a/apps/emqx_auth_mongodb/src/emqx_authz_mongodb_schema.erl
+++ b/apps/emqx_auth_mongodb/src/emqx_authz_mongodb_schema.erl
@@ -24,9 +24,12 @@
     fields/1,
     desc/1,
     source_refs/0,
-    select_union_member/1
+    select_union_member/1,
+    namespace/0
 ]).
 
+namespace() -> "authz".
+
 type() -> ?AUTHZ_TYPE.
 
 source_refs() ->
diff --git a/apps/emqx_auth_mysql/src/emqx_authn_mysql_schema.erl b/apps/emqx_auth_mysql/src/emqx_authn_mysql_schema.erl
index 0189ecc61..17609acb8 100644
--- a/apps/emqx_auth_mysql/src/emqx_authn_mysql_schema.erl
+++ b/apps/emqx_auth_mysql/src/emqx_authn_mysql_schema.erl
@@ -22,12 +22,15 @@
 -behaviour(emqx_authn_schema).
 
 -export([
+    namespace/0,
     fields/1,
     desc/1,
     refs/0,
     select_union_member/1
 ]).
 
+namespace() -> "authn".
+
 refs() ->
     [?R_REF(mysql)].
 
diff --git a/apps/emqx_auth_mysql/src/emqx_authz_mysql_schema.erl b/apps/emqx_auth_mysql/src/emqx_authz_mysql_schema.erl
index a9ce422e6..43f6ca6fa 100644
--- a/apps/emqx_auth_mysql/src/emqx_authz_mysql_schema.erl
+++ b/apps/emqx_auth_mysql/src/emqx_authz_mysql_schema.erl
@@ -22,6 +22,7 @@
 -behaviour(emqx_authz_schema).
 
 -export([
+    namespace/0,
     type/0,
     fields/1,
     desc/1,
@@ -29,6 +30,8 @@
     select_union_member/1
 ]).
 
+namespace() -> "authz".
+
 type() -> ?AUTHZ_TYPE.
 
 fields(mysql) ->
diff --git a/apps/emqx_auth_postgresql/src/emqx_authn_postgresql_schema.erl b/apps/emqx_auth_postgresql/src/emqx_authn_postgresql_schema.erl
index 6b3b600ee..ef7d00df3 100644
--- a/apps/emqx_auth_postgresql/src/emqx_authn_postgresql_schema.erl
+++ b/apps/emqx_auth_postgresql/src/emqx_authn_postgresql_schema.erl
@@ -22,12 +22,15 @@
 -behaviour(emqx_authn_schema).
 
 -export([
+    namespace/0,
     fields/1,
     desc/1,
     refs/0,
     select_union_member/1
 ]).
 
+namespace() -> "authn".
+
 select_union_member(
     #{
         <<"mechanism">> := ?AUTHN_MECHANISM_BIN, <<"backend">> := ?AUTHN_BACKEND_BIN
diff --git a/apps/emqx_auth_postgresql/src/emqx_authz_postgresql_schema.erl b/apps/emqx_auth_postgresql/src/emqx_authz_postgresql_schema.erl
index 2be7e9387..296b00126 100644
--- a/apps/emqx_auth_postgresql/src/emqx_authz_postgresql_schema.erl
+++ b/apps/emqx_auth_postgresql/src/emqx_authz_postgresql_schema.erl
@@ -22,6 +22,7 @@
 -behaviour(emqx_authz_schema).
 
 -export([
+    namespace/0,
     type/0,
     fields/1,
     desc/1,
@@ -29,6 +30,8 @@
     select_union_member/1
 ]).
 
+namespace() -> "authz".
+
 type() -> ?AUTHZ_TYPE.
 
 fields(postgresql) ->
diff --git a/apps/emqx_auth_redis/src/emqx_authn_redis_schema.erl b/apps/emqx_auth_redis/src/emqx_authn_redis_schema.erl
index 7b5794c48..f3e124ca1 100644
--- a/apps/emqx_auth_redis/src/emqx_authn_redis_schema.erl
+++ b/apps/emqx_auth_redis/src/emqx_authn_redis_schema.erl
@@ -22,12 +22,15 @@
 -behaviour(emqx_authn_schema).
 
 -export([
+    namespace/0,
     fields/1,
     desc/1,
     refs/0,
     select_union_member/1
 ]).
 
+namespace() -> "authn".
+
 refs() ->
     [
         ?R_REF(redis_single),
diff --git a/apps/emqx_auth_redis/src/emqx_authz_redis_schema.erl b/apps/emqx_auth_redis/src/emqx_authz_redis_schema.erl
index 755192bfc..5cd084795 100644
--- a/apps/emqx_auth_redis/src/emqx_authz_redis_schema.erl
+++ b/apps/emqx_auth_redis/src/emqx_authz_redis_schema.erl
@@ -22,6 +22,7 @@
 -behaviour(emqx_authz_schema).
 
 -export([
+    namespace/0,
     type/0,
     fields/1,
     desc/1,
@@ -29,6 +30,8 @@
     select_union_member/1
 ]).
 
+namespace() -> "authz".
+
 type() -> ?AUTHZ_TYPE.
 
 fields(redis_single) ->