How to update product quantities based on SKU instead of title?

2 0 0

Hi , 
I have large number of products from my supplier 
the problem is too many products have the same title but different SKU 
they are all uploaded now to the store using third party app but I'm not using it anymore 
now when I try to update quantity using shopify admin 
I keep getting this error : 

 product were ignored because they already exist in your store for large number of product 
I spoke with customer service but they weren't able to solve the issue 
for example I have : 
product title     SKU    Quantity 
Xbox                   1001            5 
Xbox                    1002          10 
when I make the update one of them only got updated 
is there anyway to get over this ? 
Kind Regards

Reply 1 (1)

2 0 0

Nothing !!