If you want to troubleshoot issues with Google Analytics tracking, first ensure your basic setup is correct as described in the Help Center under Verifying Your Setup.

Troubleshooting your Analytics tracking will center around two key issues:

1. Errors/typos in your tracking code syntax (e.g., whitespace, incorrectly spelled customizations, incorrect parameter names)
2. Data missing from your reports

The rest of this document covers how you can use troubleshooting tools to help identify and correct these two basic issues.