I'm trying to get campaign stats for TPN (stats/accounts/:account_id/campaigns) using the following metrics. https://dev.twitter.com/ads/analytics/metrics-and-segmentation
All the TPN metrics are still 0. promoted_tweet_tpn_clicks, promoted_tweet_tpn_engagements. The billed_charge_local_micro is still 0 for the campaigns.
Continuing the discussion from Getting stats on TPN campaigns:
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@psuedorandom the metrics are now available through the API, but as Bernd pointed out on the thread you linked to already, TPN (Now called Twitter Audience Network) was a closed beta.