SG: {
      account_number: {format: '123456789012', regexp: '[0-9]{6,12}', test_regexp: '[0-9]{6,12}' },
      routing_1: {title: "bank_code", format: '1234', regexp: '[0-9]{4}', test_regexp: '[0-9]{4}' },
      routing_2: {title: 'branch_code', format: '567', regexp: '[0-9]{3}', test_regexp: '[0-9]{3}'},
      separator: "-",