|| $self->ut_flag('message_noemail')
|| $self->ut_enum('locale', [ '', FS::Locales->locales ])
|| $self->ut_currencyn('currency')
- || $self->ut_alphan('po_number')
+ || $self->ut_textn('po_number')
|| $self->ut_enum('complimentary', [ '', 'Y' ])
|| $self->ut_flag('invoice_ship_address')
|| $self->ut_flag('invoice_dest')