On Tuesday, June 1, 2021, in accordance with the deprecation schedule, v202005 of the Ad Manager API will sunset. At that time, any requests made to this version will return errors.

If you’re still using v202005, now is the time to upgrade to a newer release and take advantage of additional functionality. For example, in v202102 we added support for AudioCreative types.

When you’re ready to upgrade, check the full release notes to identify any breaking changes. For instance, starting in v202008, we replaced the singular LineItem.viewabilityProviderCompanyId field with viewabilityProviderCompanyIds for specifying a list of IDs. - Donovan McMurray, Ad Manager API Team