Category taxonomies value 6 means IAB Tech Lab Content Taxonomy 2.2

When to send it

Value 6 selects Content Taxonomy 2.2. Sellers whose contextual classifiers output 2.2 IDs send it in the content-side cattax fields, and buyers use the IDs for contextual targeting and brand safety rules.

It is confused with 5 (Content Taxonomy 2.1) and with 7 (Content Taxonomy 3.0). A buyer that maps 3.0 IDs should not assume a 2.2 ID means the same thing; compare the two files before reusing a mapping. When you upgrade a classifier, change the cattax value in the same release.

Example

{
  "app": {
    "cattax": 6
  }
}

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.