Troubleshooting Identity Stitching Issues Across Multiple Data Sources in Adobe Experience Platform

Hi Community,

I'm learning Adobe Experience Platform and wanted to understand a challenge that seems common in real-world implementations. When customer data is ingested from multiple channels, there can be situations where profiles are either incorrectly merged or remain fragmented due to identity conflicts. This can affect audience segmentation, personalization, and reporting. How do you typically identify, troubleshoot, and prevent identity stitching issues in production AEP environments? Any lessons learned or best practices would be greatly appreciated.