diff --git a/loopback/locale/es.json b/loopback/locale/es.json
index 1eb953d89..e4bdd035e 100644
--- a/loopback/locale/es.json
+++ b/loopback/locale/es.json
@@ -390,6 +390,7 @@
 	"The web user's email already exists": "El correo del usuario web ya existe",
     "Sales already moved": "Ya han sido transferidas",
     "The raid information is not correct": "La información de la redada no es correcta",
-    "There are tickets to be invoiced": "Hay tickets para esta zona, borralos primero"
+    "There are tickets to be invoiced": "Hay tickets para esta zona, borralos primero",
+	"An item type with the same code already exists": "Un tipo con el mismo código ya existe"
 }
 
diff --git a/modules/item/back/locale/item-minimum-quantity/en.yml b/modules/item/back/locale/item-minimum-quantity/en.yml
new file mode 100644
index 000000000..206b1d96b
--- /dev/null
+++ b/modules/item/back/locale/item-minimum-quantity/en.yml
@@ -0,0 +1,5 @@
+name: Minimum Quantity
+columns:
+    ended: Ended
+    code: Code
+    started: Started
\ No newline at end of file
diff --git a/modules/item/back/locale/item-minimum-quantity/es.yml b/modules/item/back/locale/item-minimum-quantity/es.yml
new file mode 100644
index 000000000..68c67eeff
--- /dev/null
+++ b/modules/item/back/locale/item-minimum-quantity/es.yml
@@ -0,0 +1,5 @@
+name: Cantidad Mínima
+columns:
+    ended: Finaliza
+    quantity: Cantidad
+    started: Comienza
diff --git a/modules/item/back/locale/item/en.yml b/modules/item/back/locale/item/en.yml
index ea40fd34b..f5e6fcf9a 100644
--- a/modules/item/back/locale/item/en.yml
+++ b/modules/item/back/locale/item/en.yml
@@ -46,4 +46,4 @@ columns:
     itemFk: item
     density: density
     compression: compression
-
+    minQuantity: min quantity
diff --git a/modules/item/back/locale/item/es.yml b/modules/item/back/locale/item/es.yml
index 973f5e94f..68020d452 100644
--- a/modules/item/back/locale/item/es.yml
+++ b/modules/item/back/locale/item/es.yml
@@ -46,4 +46,4 @@ columns:
     itemFk: artículo
     density: densidad
     compression: compresión
-
+    minQuantity: Cantidad mínima
diff --git a/modules/item/back/models/item-type.js b/modules/item/back/models/item-type.js
new file mode 100644
index 000000000..4dc8adfc9
--- /dev/null
+++ b/modules/item/back/models/item-type.js
@@ -0,0 +1,9 @@
+let UserError = require('vn-loopback/util/user-error');
+
+module.exports = Self => {
+    Self.rewriteDbError(function(err) {
+        if (err.code === 'ER_DUP_ENTRY')
+            return new UserError(`An item type with the same code already exists`);
+        return err;
+    });
+};