Here are some things you can do -
To identify tracking issues, compare data from different sources like your analytics tools (e.g., Google Analytics), affiliate network reports, and merchant data.
Utilize third-party verification tools to integrate and analyze data from multiple sources for auditing and error detection.
Ensure correct tracking setup during the affiliate handover process. Some tools allow in-depth analysis of tracking on the advertiser's landing page.
Use tools like Link Checker to scan and repair your links, and test your tracking codes with tools like Google Tag Manager.
If issues persist, contact the affiliate network or merchant. Provide evidence and discuss solutions or compensation if the issues are beyond your control.
Understanding the cause and severity of the problem will guide your approach to resolving affiliate tracking or link issues.