Resolved Skipped Annonce Missing required field product_code

I had this problem during migration Products from Virtuemart to Hikashop ,
I finally find out that my client product didn't have any product_sku / product_code
The solutions was simple to put back the product sku on over then 900 product
I find the answer in Vm forum :

update ********_virtuemart_products

set product_sku = virtuemart_product_id

Big Thanks to Rolandd Support & specially for Tharuna advise and support