# How Auto Correlation Works in AIQ **Last reviewed:** September 29, 2026 Use this article to understand the mechanics of AIQ Auto Correlation and how extracted values are applied during replay. ## What changed in this article - Kept the “how it works” focus but added clearer mechanics around extraction, variable reuse, and replay substitution. - Added validation checks for source response, target request, matching pattern, and false-positive correlation candidates. - Added troubleshooting guidance for values that change per user, per iteration, or per environment. ## Validation workflow 1. Locate the dynamic value in the source response or prior step output. 2. Confirm where the value must be reused in a later request or action. 3. Replay with correlation enabled and verify the substituted value matches the current execution context. **Review note:** This page now complements the overview by explaining the correlation lifecycle. --- Last updated: September 29, 2026 If you have feedback on this topic, contact .