This section explains how the basic data of the item in Google Merchant Center is generated, including the item ID, product title and product description.
With expressions, you are free to customize these attributes to meet the marketing requirements. For example, you can add arbitrary text to product titles, or pull the product options into the feed for a description like "Styles: Short-sleeve, Long-sleeve; Colors: Red, Blue; Sizes: Small, Medium", which is recommended for better SEO.
The submitted quantity could be derived from an expression. The default settings of this attribute is the "raw quantity", which is pulled from Shopify product variant inventory data.
When the status of product is "back order" or "pre-order", availability date is mandatory. If a proper date could not be derived, "back order" and "pre-order" product are automatically changed to "in stock" to avoid the item being rejected by Google Shopping.
An example that set the availability date to "a month from now"
With expression, product availability can be customized to the requirements of the feed
By default, the availability is derived from the adjusted quantity with the following logic:
1/ If Shopify setting is to not track inventory, or the adjusted stock is greater than 0, then status is "in stock"
2/ Otherwise, if the inventory policy is set to "Continue selling when out of stock" then status is "back order". Do note that there is some catch with "back order" and "pre order" status that depends on the presence of "Availability date" which is explained in the following section.
3/ Otherwise, status is "out of stock"
