+__PACKAGE__->before_save('_before_save_set_customernumber');
+
+sub _before_save_set_customernumber {
+ my ($self) = @_;
+
+ $self->create_trans_number if !defined $self->customernumber || $self->customernumber eq '';
+ return 1;
+}
+
+sub validate {
+ my ($self) = @_;
+
+ my @errors;
+ push @errors, $::locale->text('The customer name is missing.') if !$self->name;
+ push @errors, $self->validate_ibans;
+
+ return @errors;
+}
+