diff --git a/client/core/src/lib/interceptor.js b/client/core/src/lib/interceptor.js
index d6a2b4b592..5eac56e69d 100644
--- a/client/core/src/lib/interceptor.js
+++ b/client/core/src/lib/interceptor.js
@@ -30,6 +30,12 @@ function interceptor($q, $window, vnApp, $translate, $cookies) {
             let data = rejection.data;
             let error;
 
+            switch (rejection.xhrStatus) {
+            case 'timeout':
+            case 'abort':
+                return $q.reject(rejection);
+            }
+
             if (data && data.error instanceof Object)
                 error = data.error.message;
             else if (rejection.status === -1)
diff --git a/services/loopback/common/locale/en.json b/services/loopback/common/locale/en.json
index cc493531ce..cd258a4b6c 100644
--- a/services/loopback/common/locale/en.json
+++ b/services/loopback/common/locale/en.json
@@ -8,5 +8,6 @@
 	"Ya existe un usuario con ese nombre": "Ya existe un usuario con ese nombre",
 	"Quantity cannot be zero": "Quantity cannot be zero",
 	"can't be blank": "can't be blank",
-	"DNI Incorrecto": "DNI Incorrecto"
+	"DNI Incorrecto": "DNI Incorrecto",
+	"El NIF/CIF debe ser único": "El NIF/CIF debe ser único"
 }
\ No newline at end of file