Subscription attribution troubleshooting for external domains
External domains can appear in subscription attribution reports, creating noise in your conversion data. This guide covers the known causes and how to resolve them.
External domains appearing in subscription attribution
Section titled “External domains appearing in subscription attribution”Domain: gtm-msr.appspot.com
Section titled “Domain: gtm-msr.appspot.com”The domain https://gtm-msr.appspot.com/render2 is part of the Google Tag Manager infrastructure. Events from this domain get attributed to the Subscriptions code under two scenarios:
- GTM testing and previews: When someone tests or previews changes in Google Tag Manager, events also fire from this domain.
- Malware evaluation: Google regularly executes code to assess whether scripts are potentially harmful or classified as malware.
To prevent these attribution issues, implement subscription tracking directly in your [JavaScript implementation](track-conversions-and-subscriptions-with-the-sdk.md) rather than through GTM.
Frequently asked questions
Section titled “Frequently asked questions”Why does gtm-msr.appspot.com appear in subscription attribution?
The domain gtm-msr.appspot.com is part of Google Tag Manager infrastructure. It appears in subscription attribution when GTM previews trigger events or when Google runs automated malware evaluation scans that execute your scripts.
How do I prevent external domains from appearing in subscription attribution?
Implement subscription tracking directly in your JavaScript code instead of relying on Google Tag Manager. This eliminates attribution noise from GTM infrastructure domains.