We're pleased to announce that v202211 of the Google Ad Manager API is available starting today, November 2nd. This release lays the groundwork for multiple third-party impression tracking URLs. ImageCreative and other creative types replaced the string field thirdPartyImpressionTrackingUrl with the list field thirdPartyImpressionTrackingUrls. Currently only a single URL can be provided in the list.

For the full list of changes, check the release notes. Feel free to reach out to us on the Ad Manager API forum with any API-related questions.
- Chris Seeley, Ad Manager API Team