We're pleased to announce that v202311 of the Google Ad Manager API is available starting today, November 8, 2023. This release brings support for marketplace ID on Proposals and consolidates MCM Child Network information in the Company object, removing the Network.childPublishers field.
Network.childPublishers
For the full list of changes, check the release notes. Feel free to contact us on the Ad Manager API forum with any API-related questions.