Using ID field for Targeting in Product Listing Ads
I am creating an Ad Group as a subset of all my product listing ads (merchant center feed), and I am setting the targeting parameters, so that only one kind of product will display when my keywords trigger ad display. Is the ID parameter for a single ID (eg. product), or can I use multiple IDs so that several products are eligible to display? It says ID not IDs, so not sure if that means singular.
For this range of products, people rarely search with enough specificity (eg. size) to make one-to-one product/target ad groups. I would prefer one ad group set of keywords that triggers this range of products with all sizes.
If I could just get an ad to trigger, I could answer my own question, but as of yet, I haven't seen one, even after using the recommended PPC budget for 1st page display.