Product Code or SKU per product and not per variation

Can someone help me with that, I really need this thing. We have a type of product (fabrics), for which we need to have a top level product code, never mind with SKU, it can stay where it is, but need to have a product code field like title and should be able to submit it to cart.

It seems very simple, but I don’t know if it is or not.

Thanks a lot,

I Love Drupal, it has a big community, but I haven't received any response yet. At least if someone can tell me if I am duplicating the issue, is it already been discussed, or is it being discussed somewhere.

Anyway one possibility that I found is to use "Commerce Customizable Products" module, create a new line items and disclose it to the cart. But many products types are using same 'Products Line items', and I used in many views and blocks. To this point my problem may be solved but I may get the problem with combining new line items and products line items in views, blocks and searches.

My question is how can I use both 'Product Line Items' and 'Custom Line Items' in the same views and blocks, because eventually I have to use them together, or if there is any other solution.

Many thanks.

Thanks for response and sorry for being silly, just wanted to include further updates as I researched through.

OK, I have different products types and I need the field product code in only one type of products. If I added the field to product type I can't recall it in the cart view, because I can only see line items types there.

I don't want it in the variation types because I want this field as one per product.

So my question was should I add the field to Product line item, if I add it there won't it be included in all types of products.

Thanks again

Thank you very much, that works perfectly. That exactly what I wanted. I am just playing around with it, to do the same thing in other place like order invoice etc.

Thanks again.