AI-generated Key Takeaways
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          A Callout asset requires callout_text, which is a string between 1 and 25 characters long.
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          You can specify a start and end date for when the Callout asset is effective using start_dateandend_datein yyyy-MM-dd format.
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          The ad_schedule_targets[]field allows you to list non-overlapping schedules for when the asset can serve, with a maximum of 6 per day and 42 total.
A Callout asset.
| Fields | |
|---|---|
| 
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 Required. The callout text. The length of this string should be between 1 and 25, inclusive. | 
| 
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 Start date of when this asset is effective and can begin serving, in yyyy-MM-dd format. | 
| 
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 Last date of when this asset is effective and still serving, in yyyy-MM-dd format. | 
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 | List of non-overlapping schedules specifying all time intervals for which the asset may serve. There can be a maximum of 6 schedules per day, 42 in total. |