When initially creating a campaign, the API enforces a strict requirement that you dictate *when* it's allowed to begin spending, but your payload lacked this.
When initially creating a campaign, the API enforces a strict requirement that you dictate when it’s allowed to begin spending, but your payload lacked this.
Adjust your JSON schema to include startDate formatted specifically as YYYYMMDD. If you want it to start immediately naturally, just dynamically inject today’s literal date footprint.
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