network | 
      required | 
      Specific identifier provided by RAS | 
      '4178463' | 
      string | 
    
    
      site | 
      required | 
      Specific identifier name (case-insensitive) that is associated with this ad unit and provided by RAS | 
      'example_com' | 
      string | 
    
    
      area | 
      required | 
      Ad unit category name; only case-insensitive alphanumeric with underscores and hyphens are allowed | 
      'sport' | 
      string | 
    
    
      slot | 
      required | 
      Ad unit placement name (case-insensitive) provided by RAS | 
      'slot' | 
      string | 
    
    
      pageContext | 
      optional | 
      Web page context data | 
      {} | 
      object | 
    
    
      pageContext.dr | 
      optional | 
      Document referrer URL address | 
      'https://example.com/' | 
      string | 
    
    
      pageContext.du | 
      optional | 
      Document URL address | 
      'https://example.com/sport/football/article.html?id=932016a5-02fc-4d5c-b643-fafc2f270f06' | 
      string | 
    
    
      pageContext.dv | 
      optional | 
      Document virtual address as slash-separated path that may consist of any number of parts (case-insensitive alphanumeric with underscores and hyphens); first part should be the same as site value and second as area value; next parts may reflect website navigation | 
      'example_com/sport/football' | 
      string | 
    
    
      pageContext.keyWords | 
      optional | 
      List of keywords associated with this ad unit; only case-insensitive alphanumeric with underscores and hyphens are allowed | 
      ['euro', 'lewandowski'] | 
      string[] | 
    
    
      pageContext.keyValues | 
      optional | 
      Key-values associated with this ad unit (case-insensitive); following characters are not allowed in the values: " ' = ! + # * ~ ; ^ ( ) < > ] [ & @ | 
      {} | 
      object | 
    
    
      pageContext.keyValues.ci | 
      optional | 
      Content unique identifier | 
      '932016a5-02fc-4d5c-b643-fafc2f270f06' | 
      object | 
    
    
      pageContext.keyValues.adunit | 
      optional | 
      Ad unit name | 
      'example_com/sport' | 
      string |