Changes to IP Address and Session Attribute Support in the Google Ads API

Starting on February 2, 2026, the Google Ads API will no longer accept new adopters of session attributes or IP address data as part of conversion imports. To ensure a more robust and scalable experience for handling complex data, we recommend that Google Ads API developers transition to the Data Manager API - where session attributes and IP address are accepted - as their primary conversion and user data import API.

Developers who have already adopted session attributes or IP addresses in their click conversion imports can continue importing that data using the Google Ads API until they’ve moved their conversion imports over to the Data Manager API.

Technical details

• Developers will be allowlisted by their developer token.
• Once this change is rolled out, you may notice the error CUSTOMER_NOT_ALLOWLISTED_FOR_THIS_FEATURE in the partial_failure responses of your conversion import requests. This error indicates that the associated conversion was rejected due to the presence of session attributes and/or IP address.
• Resolve this error with these steps:
  • Temporarily remove session attributes and IP address from conversion import requests and continue importing conversions to the Google Ads API.
  • Update your code to use the Data Manager API with session attributes and IP address.
  • Discontinue conversion imports to the Google Ads API once you’re successfully making imports to the Data Manager API.

Reach out to the Google Ads API support or Data Manager API support channels if you have any questions.

If you have any questions or want to discuss this post, please reach out to us on our “Google Advertising and Measurement Community” Discord server.