
Hello,
Thank you for reaching out to Google Ads API Forum.
As per this documentation (https://developers.google.com/google-ads/api/docs/remarketing/audience-types/customer-match), there are two services available to upload Customer Match data. If you choose to use the OfflineUserDataJobService, then there is no need for the step number 2 you mentioned. However, if you will use UserDataService, then you will need this method (https://developers.google.com/google-ads/api/rest/reference/rest/v13/customers/uploadUserData) since this will upload the given user data.
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Google Ads API Team |