Automatically copy a field to a linked field

How can I copy my SKU field to a linked filed that will also use the same SKU to link up data from my linked table?

Copy/paste works fine. Just make sure “SKU” can be resolved exactly as found in ProductList or you’ll create many new records in ProductList.

Thanks. I was looking for a way of doing this automatic, like scripting, automation or similar.

In fact, automation starter working now, after some trial & failure.