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3rd-party creative is an ad tag that calls another ad server, uploaded using JS or Iframe.
To upload a 3rd-party creative, choose the ‘3-rd party’ option in a menu in the "Creatives" tab.
Then you’ll see the 3-rd party creative adding window:
"Name" – enter a creative’s name
"Format" – enter a creative's format (eg: 240x400).
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