use SL::DB::Invoice;
use SL::DB::Part;
use SL::DB::Unit;
+use SL::DB::TaxZone;
my ($customer, $currency_id, @parts, $buchungsgruppe, $buchungsgruppe7, $unit, $employee, $tax, $tax7, $taxzone);
$customer = SL::DB::Customer->new(
name => 'Test Customer',
currency_id => $currency_id,
+ taxzone_id => $taxzone->id,
%{ $params{customer} }
)->save;