> For the complete documentation index, see [llms.txt](https://docs.cookie3.com/cookie3-analytics/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.cookie3.com/cookie3-analytics/api/referral-systems/faq.md).

# FAQ

### FAQs

Here are answers to some frequently asked questions about the Cookie3 Referral System:

#### Q: How is referral attribution handled?

A: Cookie3 uses a last-non-direct-click attribution model. The most recent referrer gets credit for the conversion, with a 30-day attribution window by default. [Read more about it here.](/cookie3-analytics/features/conversion-events/how-our-attribution-works.md)

#### Q: What happens if a user comes through multiple referral links?

A: The first recent referral link takes precedence.

#### Q: How long are referrals tracked?

A: By default, referrals are tracked for 30 days. 

#### Q: Can I customize the referral link parameters?

A: Yes, you can use custom parameters beyond the standard `ref` and `utm_source`. Contact our support team for assistance in setting up custom parameters.

#### Q: How do I ensure my referral program complies with privacy regulations?

A: Cookie3 is designed with privacy in mind. Ensure you have proper consent mechanisms in place and clearly disclose your data collection practices in your privacy policy. [Read more about them here.](/cookie3-analytics/setup-your-site-or-app/setting-up-consent-management.md)

#### Q: Can I A/B test different referral rewards?

A: Yes, you can create multiple referral campaigns with different rewards and compare their performance using our analytics dashboard by setting up multiple [conversion events](/cookie3-analytics/features/conversion-events.md) and [filtering your leaderboard data by particular conversion event IDs](/cookie3-analytics/api/referral-systems/accessing-leaderboard-and-user-data.md).

#### Q: How often is the referral data updated?

A: Referral data is updated every 15 minutes.