diff --git a/src/constants/messages.ts b/src/constants/messages.ts
index c9762f6f..ad40a271 100644
--- a/src/constants/messages.ts
+++ b/src/constants/messages.ts
@@ -130,6 +130,7 @@ export const FAILURE_MESSAGES = {
     'CANNOT_REGISTER_ON_FROZEN_ITEM_LOGIN_SCHEMA',
   CANNOT_ENROLL_FROZEN_ITEM_LOGIN_SCHEMA:
     'CANNOT_ENROLL_FROZEN_ITEM_LOGIN_SCHEMA',
+  NOT_MEMBER_OR_GUEST: 'NOT_MEMBER_OR_GUEST',
 };
 
 export const DEFAULT_FAILURE_MESSAGE = FAILURE_MESSAGES.UNEXPECTED_ERROR;
diff --git a/src/langs/en/messages.json b/src/langs/en/messages.json
index d402954c..a2424b7a 100644
--- a/src/langs/en/messages.json
+++ b/src/langs/en/messages.json
@@ -153,5 +153,6 @@
   "DELETE_MEMBERSHIP_REQUEST": "Membership request has been successfully deleted.",
   "ENROLL": "You successfully enrolled to the item.",
   "CANNOT_REGISTER_ON_FROZEN_ITEM_LOGIN_SCHEMA": "Cannot register on the targeted item because the subscription has been frozen by its owner",
-  "CANNOT_ENROLL_FROZEN_ITEM_LOGIN_SCHEMA": "Cannot enroll in the targeted item because the subscription has been frozen by its owner"
+  "CANNOT_ENROLL_FROZEN_ITEM_LOGIN_SCHEMA": "Cannot enroll in the targeted item because the subscription has been frozen by its owner",
+  "NOT_MEMBER_OR_GUEST": "Your account is not registered as member or pseudonimized user"
 }