X-Git-Url: http://wagnertech.de/gitweb/gitweb.cgi/mfinanz.git/blobdiff_plain/ff159a4d47b9a2d10744dcfc23da2c63605c8a32..eeb5375ee7727c956cc357cc8f90b19d1bfe80b9:/SL/Controller/SalesPurchase.pm

diff --git a/SL/Controller/SalesPurchase.pm b/SL/Controller/SalesPurchase.pm
index ab31b8c65..59ab1951e 100644
--- a/SL/Controller/SalesPurchase.pm
+++ b/SL/Controller/SalesPurchase.pm
@@ -19,10 +19,10 @@ sub action_check_duplicate_invnumber {
                  );
   # we are modifying a existing daily booking - allow this if
   # booking conditions are not super strict
-  undef $exists_ap if ($::instance_conf->get_ap_changeable != 0
+  undef $exists_ap if ($exists_ap
+                    && $::instance_conf->get_ap_changeable != 0
                     && $exists_ap->gldate == DateTime->today_local);
 
-
   $_[0]->render(\ !!$exists_ap, { type => 'text' });
 }