# infer type from legacy fields if not given
$params{order_type} //= $source->customer_id ? 'sales_delivery_order'
: $source->vendor_id ? 'purchase_delivery_order'
- : undef;
+ : $source->is_sales ? 'sales_delivery_order'
+ : croak "need some way to set delivery order type from source";
# overwrite legacy is_sales from type_data
$args{is_sales} = SL::Controller::DeliveryOrder::TypeData::get3($params{order_type}, "properties", "is_customer");