From 5975ee0704c54c7c804f22952e9877821d470726 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Sven=20Sch=C3=B6ling?= <s.schoeling@linet-services.de>
Date: Wed, 28 Oct 2015 14:26:34 +0100
Subject: [PATCH 1/1] GDPDU: Behandlung von steuerfreien Werten im Export

---
 SL/GDPDU.pm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/SL/GDPDU.pm b/SL/GDPDU.pm
index 36ddebf45..71721130e 100644
--- a/SL/GDPDU.pm
+++ b/SL/GDPDU.pm
@@ -412,7 +412,7 @@ sub do_datev_csv_export {
       debit_accname    => $soll->{accname},
       credit_accno     => $haben->{accno},
       credit_accname   => $haben->{accname},
-      tax              => abs($amount->{amount}) - abs($amount->{net_amount}),
+      tax              => defined $amount->{net_amount} ? abs($amount->{amount}) - abs($amount->{net_amount}) : 0,
       notes            => $haben->{notes},
       (map { ($_ => $tax->{$_})                    } qw(taxkey tax_accname tax_accno)),
       (map { ($_ => ($haben->{$_} // $soll->{$_})) } qw(acc_trans_id invnumber name vcnumber transdate)),
-- 
2.20.1