my $error =
$self->ut_numbern('prospectnum')
- || $self->ut_foreign_key( 'agentnum', 'agent', 'agentnum' )
- || $self->ut_foreign_key( 'refnum', 'part_referral', 'refnum' )
+ || $self->ut_foreign_key( 'agentnum', 'agent', 'agentnum' )
+ || $self->ut_foreign_keyn( 'refnum', 'part_referral', 'refnum' )
|| $self->ut_textn('company')
;
return $error if $error;