Rechnungsfunktionen gehören natürlich nach IS und nicht nach IC.

[kivitendo-erp.git] / bin / mozilla / is.pl

diff --git a/bin/mozilla/is.pl b/bin/mozilla/is.pl
index 33a049f..5bfa9de 100644 (file)
--- a/bin/mozilla/is.pl
+++ b/bin/mozilla/is.pl
@@ -1518,6 +1518,10 @@ sub storno {
     $form->error($locale->text('Cannot storno storno invoice!'));
   }
 
+  if (IS->has_storno(\%myconfig, $form)) {
+    $form->error($locale->text("Invoice has already been storno'd!"));
+  }
+
   $form->{storno_id} = $form->{id};
   $form->{storno} = 1;
   $form->{id} = "";