=over 4
+=item billpkgnum - primary key
+
=item invnum - invoice (see L<FS::cust_bill>)
=item pkgnum - package (see L<FS::cust_pkg>) or 0 for the special virtual sales tax package
my $self = shift;
my $error =
- $self->ut_number('pkgnum')
+ $self->ut_numbern('billpkgnum')
+ || $self->ut_number('pkgnum')
|| $self->ut_number('invnum')
|| $self->ut_money('setup')
|| $self->ut_money('recur')