diff --git a/loopback/locale/es.json b/loopback/locale/es.json
index ea83b36c4..2c1a08f46 100644
--- a/loopback/locale/es.json
+++ b/loopback/locale/es.json
@@ -135,7 +135,7 @@
 	"Changed client paymethod": "He cambiado la forma de pago del cliente [{{clientName}} ({{clientId}})]({{{url}}})",
 	"Sent units from ticket": "Envio *{{quantity}}* unidades de [{{concept}} ({{itemId}})]({{{itemUrl}}}) a *\"{{nickname}}\"* provenientes del ticket id [{{ticketId}}]({{{ticketUrl}}})",
 	"Change quantity": "{{concept}} cambia de {{oldQuantity}} a {{newQuantity}}",
-    "Claim will be picked": "Se recogerá el género de la reclamación [({{claimId}})]({{{claimUrl}}}) del cliente *{{clientName}}*",
+	"Claim will be picked": "Se recogerá el género de la reclamación [({{claimId}})]({{{claimUrl}}}) del cliente *{{clientName}}*",
 	"Claim state has changed to incomplete": "Se ha cambiado el estado de la reclamación [({{claimId}})]({{{claimUrl}}}) del cliente *{{clientName}}* a *incompleta*",
 	"Claim state has changed to canceled": "Se ha cambiado el estado de la reclamación [({{claimId}})]({{{claimUrl}}}) del cliente *{{clientName}}* a *anulado*",
 	"Client checked as validated despite of duplication": "Cliente comprobado a pesar de que existe el cliente id {{clientId}}",
@@ -252,5 +252,6 @@
 	"Receipt's bank was not found": "No se encontró el banco del recibo",
 	"This receipt was not compensated": "Este recibo no ha sido compensado",
 	"Client's email was not found": "No se encontró el email del cliente",
-	"Aplicación bloqueada por el usuario 9": "Aplicación bloqueada por el usuario 9"
+	"Aplicación bloqueada por el usuario 9": "Aplicación bloqueada por el usuario 9",
+	"Negative basis": "Negative basis"
 }
\ No newline at end of file
diff --git a/modules/invoiceOut/back/methods/invoiceOut/invoiceClient.js b/modules/invoiceOut/back/methods/invoiceOut/invoiceClient.js
index 154546d73..017acf8b5 100644
--- a/modules/invoiceOut/back/methods/invoiceOut/invoiceClient.js
+++ b/modules/invoiceOut/back/methods/invoiceOut/invoiceClient.js
@@ -1,3 +1,5 @@
+const UserError = require('vn-loopback/util/user-error');
+
 module.exports = Self => {
     Self.remoteMethodCtx('invoiceClient', {
         description: 'Make a invoice of a client',
@@ -90,7 +92,7 @@ module.exports = Self => {
             // Validates ticket nagative base
             const hasAnyNegativeBase = await getNegativeBase(myOptions);
             if (hasAnyNegativeBase && isSpanishCompany)
-                return tx.rollback();
+                throw new UserError('Negative basis');
 
             query = `SELECT invoiceSerial(?, ?, ?) AS serial`;
             const [invoiceSerial] = await Self.rawSql(query, [