diff --git a/src/main/kotlin/org/opensearch/commons/alerting/action/DeleteCommentRequest.kt b/src/main/kotlin/org/opensearch/commons/alerting/action/DeleteCommentRequest.kt
index 096938b8..811dcd9e 100644
--- a/src/main/kotlin/org/opensearch/commons/alerting/action/DeleteCommentRequest.kt
+++ b/src/main/kotlin/org/opensearch/commons/alerting/action/DeleteCommentRequest.kt
@@ -20,7 +20,9 @@ class DeleteCommentRequest : ActionRequest {
 
     override fun validate(): ActionRequestValidationException? {
         if (commentId.isBlank()) {
-            return ActionRequestValidationException()
+            val exception = ActionRequestValidationException()
+            exception.addValidationError("comment id must not be blank")
+            return exception
         }
         return null
     }
diff --git a/src/main/kotlin/org/opensearch/commons/alerting/action/IndexCommentRequest.kt b/src/main/kotlin/org/opensearch/commons/alerting/action/IndexCommentRequest.kt
index ab62599d..6b66cb64 100644
--- a/src/main/kotlin/org/opensearch/commons/alerting/action/IndexCommentRequest.kt
+++ b/src/main/kotlin/org/opensearch/commons/alerting/action/IndexCommentRequest.kt
@@ -54,7 +54,9 @@ class IndexCommentRequest : ActionRequest {
         if (method == RestRequest.Method.POST && entityId.isBlank() ||
             method == RestRequest.Method.PUT && commentId.isBlank()
         ) {
-            return ActionRequestValidationException()
+            val exception = ActionRequestValidationException()
+            exception.addValidationError("id must not be blank")
+            return exception
         }
         return null
     }