+ active => { type => 'boolean', default => 'true' },
+ ar_chart_id => { type => 'integer', not_null => 1 },
+ copies => { type => 'integer' },
+ direct_debit => { type => 'boolean', default => 'false', not_null => 1 },
+ end_date => { type => 'date' },
+ extend_automatically_by => { type => 'integer' },
+ first_billing_date => { type => 'date' },