Shopify product stock checking (1341 products)

Hi, I have an exported list of products from a particular vendor.

I need each item checked to see if it's still availanle or discontinued on the supplier's website (items are searchable by code). If the item is listed (either in stock or out of stock), it means the item is still current. If you find any products, however that return no results, that means it has been discontinued. In that event, please archive the product by clicking on the 'Archive' button on the bottom of the product edit page, and then highlight the item in RED on the Excel sheet so I know it's been archived.

A guide short guide will be sent to complete the task.

Shopify experience required. Completion by Sunday 14 March needed.

Thanks