diff --git a/src/constants/messages.ts b/src/constants/messages.ts
index 67617bc6..24e3ee86 100644
--- a/src/constants/messages.ts
+++ b/src/constants/messages.ts
@@ -30,6 +30,10 @@ export const FAILURE_MESSAGES = {
   UNEXPECTED_ERROR: 'UNEXPECTED_ERROR',
   EMAIL_ALREADY_TAKEN: 'EMAIL_ALREADY_TAKEN',
 
+  // item validation
+  INVALID_ITEM_NAME_PATTERN_ERROR: 'INVALID_ITEM_NAME_PATTERN_ERROR',
+  INVALID_ITEM_NAME_MAX_LENGTH_ERROR: 'INVALID_ITEM_NAME_MAX_LENGTH_ERROR',
+
   FILE_IS_NOT_IMAGE: 'FILE_IS_NOT_IMAGE',
 
   // file upload limiter
diff --git a/src/langs/en/messages.json b/src/langs/en/messages.json
index a2424b7a..fefb70d3 100644
--- a/src/langs/en/messages.json
+++ b/src/langs/en/messages.json
@@ -154,5 +154,7 @@
   "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",
-  "NOT_MEMBER_OR_GUEST": "Your account is not registered as member or pseudonimized user"
+  "NOT_MEMBER_OR_GUEST": "Your account is not registered as member or pseudonimized user",
+  "INVALID_ITEM_NAME_PATTERN_ERROR": "The item's name is not valid. It should start and end with an alphabetical character.",
+  "INVALID_ITEM_NAME_MAX_LENGTH_ERROR": "The item's name is too long."
 }