diff --git a/src/main/java/net/hostsharing/hsadminng/hs/booking/item/validators/HsBookingItemEntityValidator.java b/src/main/java/net/hostsharing/hsadminng/hs/booking/item/validators/HsBookingItemEntityValidator.java
index d7e9fd1b..85468088 100644
--- a/src/main/java/net/hostsharing/hsadminng/hs/booking/item/validators/HsBookingItemEntityValidator.java
+++ b/src/main/java/net/hostsharing/hsadminng/hs/booking/item/validators/HsBookingItemEntityValidator.java
@@ -42,7 +42,7 @@ public class HsBookingItemEntityValidator extends HsEntityValidator<HsBookingIte
         ).filter(Objects::nonNull).toList();
     }
 
-    // FIXME: convert into generic shape like multi-options validator
+    // TODO.refa: convert into generic shape like multi-options validator
     private static String validateMaxTotalValue(
             final HsBookingItemEntity bookingItem,
             final ValidatableProperty<?> propDef) {
diff --git a/src/main/java/net/hostsharing/hsadminng/hs/validation/HsEntityValidator.java b/src/main/java/net/hostsharing/hsadminng/hs/validation/HsEntityValidator.java
index 0244df74..2e8a6e65 100644
--- a/src/main/java/net/hostsharing/hsadminng/hs/validation/HsEntityValidator.java
+++ b/src/main/java/net/hostsharing/hsadminng/hs/validation/HsEntityValidator.java
@@ -22,7 +22,7 @@ public abstract class HsEntityValidator<E> {
 
     protected static List<String> enrich(final String prefix, final List<String> messages) {
         return messages.stream()
-                // FIXME: this is a bit hacky, I need to find the right place to add the prefix
+                // TODO:refa: this is a bit hacky, I need to find the right place to add the prefix
                 .map(message -> message.startsWith("'") ? message : ("'" + prefix + "." + message))
                 .toList();
     }
@@ -52,12 +52,6 @@ public abstract class HsEntityValidator<E> {
         return result;
     }
 
-    protected List<String> validateParentEntities(final HsBookingItemEntity bookingItem) {
-        return bookingItem.getParentItem() != null ?
-                HsBookingItemEntityValidatorRegistry.doValidate(bookingItem.getParentItem()) :
-                emptyList();
-    }
-
     @SafeVarargs
     protected static List<String> sequentiallyValidate(final Supplier<List<String>>... validators) {
         return new ArrayList<>(stream(validators)