Category taxonomies value 8 means IAB Tech Lab Ad Product Taxonomy 2.0

When to send it

Value 8 selects Ad Product Taxonomy 2.0. Like 3, it describes advertised products and services, so it belongs with BidRequest.bcat and BidRequest.acat (through BidRequest.cattax) and with Bid.cat (through Bid.cattax).

Buyers that label creatives with 2.0 IDs can match a seller's blocklist without translation. The value is confused with 3 (Ad Product Taxonomy 1.0): the two are separate files, so a 1.0 blocklist sent under 8 blocks the wrong products, or nothing. Content taxonomy IDs under 8 are equally wrong.

Example

{
  "app": {
    "cattax": 8
  }
}

Fields that carry it

• app.cattax
• seatbid.bid.cattax
• cattax
• app.content.cattax
• app.content.gtax
• app.content.producer.cattax
• app.publisher.cattax
• site.cattax

Other values in category taxonomies

The category taxonomies list page explains the whole list and its common mistakes.