diff --git a/application/Espo/Core/Templates/Metadata/CategoryTree/entityDefs.json b/application/Espo/Core/Templates/Metadata/CategoryTree/entityDefs.json
index 702d81770b..1e45699e5a 100644
--- a/application/Espo/Core/Templates/Metadata/CategoryTree/entityDefs.json
+++ b/application/Espo/Core/Templates/Metadata/CategoryTree/entityDefs.json
@@ -69,6 +69,7 @@
             "type": "hasMany",
             "foreign": "parent",
             "entity": "{entityType}",
+            "readOnly": true,
             "isCustom": true
         }
     },
diff --git a/application/Espo/Modules/Crm/Resources/metadata/entityDefs/DocumentFolder.json b/application/Espo/Modules/Crm/Resources/metadata/entityDefs/DocumentFolder.json
index 7cd0ce3238..0148939fb0 100644
--- a/application/Espo/Modules/Crm/Resources/metadata/entityDefs/DocumentFolder.json
+++ b/application/Espo/Modules/Crm/Resources/metadata/entityDefs/DocumentFolder.json
@@ -68,7 +68,8 @@
         "children": {
             "type": "hasMany",
             "foreign": "parent",
-            "entity": "DocumentFolder"
+            "entity": "DocumentFolder",
+            "readOnly": true
         },
         "documents": {
             "type": "hasMany",
diff --git a/application/Espo/Resources/metadata/entityDefs/EmailTemplateCategory.json b/application/Espo/Resources/metadata/entityDefs/EmailTemplateCategory.json
index 91dcc87136..5ba3393a96 100644
--- a/application/Espo/Resources/metadata/entityDefs/EmailTemplateCategory.json
+++ b/application/Espo/Resources/metadata/entityDefs/EmailTemplateCategory.json
@@ -63,7 +63,8 @@
         "children": {
             "type": "hasMany",
             "foreign": "parent",
-            "entity": "EmailTemplateCategory"
+            "entity": "EmailTemplateCategory",
+            "readOnly": true
         },
         "emailTemplates": {
             "type": "hasMany",