Thanks that was exactly what I needed I can close the topic now On Wednesday, October 1, 2025 at 12:38:33 PM UTC+2 Google Ads API Forum Advisor wrote:
> Hi, > > Thank you for reaching out to the Google Ads API support team. > > Can you confirm whether you are trying to upload the audiences to an > already created audience using the customer match in the Google Ads API? If > yes, you can absolutely use the Google Ads API (specifically Customer > Match) to upload data to an existing audience and target only that > audience. You need to use the Google Ads API with the > OfflineUserDataJobService > <https://developers.google.com/google-ads/api/reference/rpc/v21/OfflineUserDataJobService> > > to manage your Customer Match audience data. > > First, you must identify your existing audience. While you know the name, > the API requires the resource name of the existing CustomerMatchUserList. > You can query the user_list > <https://developers.google.com/google-ads/api/fields/v21/user_list> > resource to find the ID based on the name. You can initiate an upload > process by creating a new OfflineUserDataJob > <https://developers.google.com/google-ads/api/reference/rpc/v21/OfflineUserDataJobService/CreateOfflineUserDataJob>. > > When creating the job, you explicitly link it to your existing audience by > setting the CustomerMatchUserListMetadata > <https://developers.google.com/google-ads/api/reference/rpc/v21/OfflineUserDataJob#customer_match_user_list_metadata> > > field and providing the resource name of the existing > CustomerMatchUserList. This ensures the data goes only to that specific > list. You send the customer data (hashed emails, phones, etc., usually in > batches) using AddOfflineUserDataJobOperations > <https://developers.google.com/google-ads/api/reference/rpc/v21/OfflineUserDataJobService/AddOfflineUserDataJobOperations>. > > The operation is to append to the existing list. You can run the job to > process the data by using RunOfflineUserDataJob > <https://developers.google.com/google-ads/api/reference/rpc/v21/OfflineUserDataJobService/RunOfflineUserDataJob>. > > I would recommend you to refer to this documentation > <https://developers.google.com/google-ads/api/docs/remarketing/audience-segments/customer-match/get-started#usage-flow> > > for more detailed information. You can follow the best practices > <https://developers.google.com/google-ads/api/docs/remarketing/audience-segments/customer-match/get-started#best-practices> > > in mind when designing your Customer Match integration. > > > Thanks, > > [image: Google Logo] Google Ads API Team > Feedback > How was our support today? > > [image: rating1] > <https://docs.google.com/forms/d/e/1FAIpQLSeRhIg5VeThVmbcD0c5DTWTDjmpJuSktN8vFelEL7_KV_Orbg/viewform?usp=pp_url&entry.141427034=1&entry.295079254=500Ht00001u7ySDIAY> > > [image: rating2] > <https://docs.google.com/forms/d/e/1FAIpQLSeRhIg5VeThVmbcD0c5DTWTDjmpJuSktN8vFelEL7_KV_Orbg/viewform?usp=pp_url&entry.141427034=2&entry.295079254=500Ht00001u7ySDIAY> > > [image: rating3] > <https://docs.google.com/forms/d/e/1FAIpQLSeRhIg5VeThVmbcD0c5DTWTDjmpJuSktN8vFelEL7_KV_Orbg/viewform?usp=pp_url&entry.141427034=3&entry.295079254=500Ht00001u7ySDIAY> > > [image: rating4] > <https://docs.google.com/forms/d/e/1FAIpQLSeRhIg5VeThVmbcD0c5DTWTDjmpJuSktN8vFelEL7_KV_Orbg/viewform?usp=pp_url&entry.141427034=4&entry.295079254=500Ht00001u7ySDIAY> > > [image: rating5] > <https://docs.google.com/forms/d/e/1FAIpQLSeRhIg5VeThVmbcD0c5DTWTDjmpJuSktN8vFelEL7_KV_Orbg/viewform?usp=pp_url&entry.141427034=5&entry.295079254=500Ht00001u7ySDIAY> > [2025-10-01 10:37:42Z GMT] This message is in relation to case > "ref:!00D1U01174p.!500Ht01u7ySD:ref" (ADR-00334339) > > > -- The information contained in this e-mail may be confidential. 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