Hello,
Thanks for reaching out. Firstly, I recommend moving to the Ads API as soon as you can, as the
AdWords API will become unavailable in April 2022. If you want to get campaign performance for campaigns with a shared budget, you can filter using the
IsBudgetExplicitlyShared attribute. For budget performance, you can use the Budget Performance Report, and filter using
the same attribute to include only shared budgets.
Regards,
Matt
Google Ads API Team

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