- chart_id => { type => 'integer' },
- tax_id => { type => 'integer' },
- taxkey_id => { type => 'integer' },
+ chart_id => { type => 'integer', not_null => 1 },
+ tax_id => { type => 'integer', not_null => 1 },
+ taxkey_id => { type => 'integer', not_null => 1 },