Product code not appearing on invoice

I am trying to figure out how to show the code when a product is ordered more than once, but in a different size.



The first product will print on the invoice with the code. But any others will not show the code.



This can get confusing with long orders over multiple pages.



Is there a way to get the code to show no matter what?



I am attaching an example.



Is there also a way to separate each item with a line? They tend to run together.



Thanks so much!



Mindy

invoice.JPG

Can anyone help with this? I would appreciate it so much!