diff --git a/irs-policy-store/src/main/java/org/eclipse/tractusx/irs/policystore/validators/ValidListOfBusinessPartnerNumbers.java b/irs-policy-store/src/main/java/org/eclipse/tractusx/irs/policystore/validators/ValidListOfBusinessPartnerNumbers.java
index ad2501498..e2929338d 100644
--- a/irs-policy-store/src/main/java/org/eclipse/tractusx/irs/policystore/validators/ValidListOfBusinessPartnerNumbers.java
+++ b/irs-policy-store/src/main/java/org/eclipse/tractusx/irs/policystore/validators/ValidListOfBusinessPartnerNumbers.java
@@ -45,5 +45,12 @@
 
     Class<? extends Payload>[] payload() default { };
 
+    /**
+     * Whether to allow "default" as a valid value
+     * (This is used in {@link org.eclipse.tractusx.irs.policystore.controllers.PolicyStoreController}
+     * for filtering default policies).
+     *
+     * @return the value of the flag
+     */
     boolean allowDefault() default false;
 }