+sub insert {
+ my $self = shift;
+
+ # custnum might not have have been defined in sub check (for one-shot new
+ # customers), so check it here instead
+
+ my $error = $self->ut_number('custnum');
+ return $error if $error
+
+ return "Unknown customer"
+ unless qsearchs( 'cust_main', { 'custnum' => $self->custnum } );
+
+ $self->SUPER::insert;
+
+}
+