diff --git a/pkg/webui/locales/en.json b/pkg/webui/locales/en.json
index 334ecdaf142..886da3f0caa 100644
--- a/pkg/webui/locales/en.json
+++ b/pkg/webui/locales/en.json
@@ -121,7 +121,7 @@
   "account.views.validate.index.validateFail": "There was an error and the contact info could not be validated",
   "account.views.validate.index.validatingAccount": "Validating account…",
   "account.views.validate.index.tokenNotFoundTitle": "Token not found",
-  "account.views.validate.index.tokenNotFoundMessage": "The validation token was not found. This could mean that the contact info has already been validated. Otherwise, please contact an administrator.",
+  "account.views.validate.index.tokenNotFoundMessage": "The validation token was not found. This could mean that the contact info has already been validated or the token has been invalidated. Re-request another validation and if the error persists, please contact an administrator.",
   "components.collapse.index.collapse": "Collapse",
   "components.collapse.index.expand": "Expand",
   "components.data-sheet.index.noData": "No data available",
diff --git a/pkg/webui/locales/ja.json b/pkg/webui/locales/ja.json
index 5dd59b2b5bb..2829a24356a 100644
--- a/pkg/webui/locales/ja.json
+++ b/pkg/webui/locales/ja.json
@@ -2199,6 +2199,7 @@
   "error:pkg/identityserver:user_rejected": "ユーザアカウントが拒否されました",
   "error:pkg/identityserver:user_requested": "ユーザアカウント承認が保留中です",
   "error:pkg/identityserver:user_suspended": "ユーザアカウントが凍結中です",
+  "error:pkg/identityserver:validation_request_forbidden": "",
   "error:pkg/identityserver:validations_already_sent": "この連絡先情報への検証は送信済みです",
   "error:pkg/internal/registry:end_device_euis_taken": "JoinEUI `{join_eui}`およびDevEUI `{dev_eui}`を持つエンドデバイスは、すでにアプリケーション`{application_id}`で`{device_id}`として登録されています",
   "error:pkg/interop:activation": "アクティベーションが許可されません",