From ca456512657be03f972cbcd6cb16e21844011b34 Mon Sep 17 00:00:00 2001
From: Laurent Destailleur <eldy@destailleur.fr>
Date: Sat, 23 Feb 2019 14:38:13 +0100
Subject: [PATCH] Update api_invoices.class.php

---
 htdocs/compta/facture/class/api_invoices.class.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/htdocs/compta/facture/class/api_invoices.class.php b/htdocs/compta/facture/class/api_invoices.class.php
index 0cb005ddba5..afecfd33b45 100644
--- a/htdocs/compta/facture/class/api_invoices.class.php
+++ b/htdocs/compta/facture/class/api_invoices.class.php
@@ -956,7 +956,7 @@ class Invoices extends DolibarrApi
                 throw new RestException(404, 'Thirdparty not found');
         }
 
-		if (! $object->paye)	// protection against multiple submit
+		if (! $this->invoice->paye)	// protection against multiple submit
 		{
 		   	$this->invoice->fetch_lines();
 				
@@ -1015,7 +1015,7 @@ class Invoices extends DolibarrApi
 			}
 			else
 			{
-				throw new RestException(500, 'Discount error');
+				throw new RestException(500, 'Discount creation error');
 				$this->db->rollback();
 			}
 		}