Version parameter required to download subscription reports in Reporter.
Starting August 15, 2018, you'll need to specify a version parameter to download subscription reports using Reporter. The latest version is 1_1, which includes new insights into your subscriptions data, such as the billing status of auto-renewable subscriptions and details on introductory pricing.
If you use related tools or scripts, be sure to make any changes necessary to account for these new fields. Version 1_0 will no longer be available as of August 15, 2018.
To learn how to specify a version parameter, see the Reporter User Guide. You can also learn about the new data fields available for subscription reports.