I have solved this issue. You have to write docs included in the archive with theme. You’ll found an information about the items IDs. The problem will be solved when all items is assigned with unique ID.
P.S. You can write me poniatovski (at) gmail.com
I have got the same problem.
What do you mean “you must add an item ID” ?
I don’t understand where I must add an item IDs…BR, Evgueni
On your post, in the ecommerce tab you will enter the Item ID (an inventory # you are assigning the product) along with the price and other attributes of the product.