From May Temporary IDs Must Be Unique for All Objects in Newly Created Listing Groups  and Product Partitions in AdWords and Google Ads APIs

Beginning in May, 2021 Google will enforce a requirement that temporary IDs be unique for all objects in newly created listing groups (used for Hotel Ads and Shopping Ads in the Google Ads API) and product partitions (used for Shopping Ads in the AdWords API). This change will affect all versions of both the AdWords and Google Ads APIs.

In order to avoid unnecessary breakages, API users should update their applications to ensure that all temporary IDs used in individual requests are unique.