If you would like to advertise only on products that are in stock – you have 2 options how to do it.
#1 Get the right XML product data feed
If you will edit your xml feed in way that only products on which you would like to advertise will be included -> the job is done and you will never forget it.
#2 Filter your products by <delivery_date>
Second option is to filter your products within campaign by for example <delivery_date> tag. First of all -> you have to have this tag inside your xml product data feed filled for each product of course. Then you have to map it to Custom_tag 1 or 2 in “Tag assignment” section. Finally you have to go to “Filters” section below and choose those values which are suitable for your advertising. In this scenario -> we have client whose products that have delivery_date more than “0” are in stock.