Shopify and Xero Integration Problem - HELP!

[RegarAustralia]

Hi guys,

I have Shopify integrated with Xero. It's working well (sale in Shopify generates invoice automatically in Xero) except for one thing... no item code. All invoices generated by Xero do not have an item code on them so it's not matching the item to my Xero inventory.

Anyone know how to fix this?