Google has announced a new data retention policy for Google Ads effective June 1, 2026. This policy will implement a 37-month retention period for granular performance statistics, while high-level data will remain available for 11 years.
Starting on the enforcement date, queries requesting granular segments (e.g., daily or weekly data) older than 37 months will return a DateRangeError.INVALID_DATE error. Advertisers are advised to update their queries to adapt to these changes and export necessary data before the deadline.

For detailed information, refer to the official announcement here: New Data Retention Policy for Google Ads starting June 1, 2026.