Missing scripts on Unity prefabs can cause subtle issues that go unnoticed for extended periods. These problems often arise after common development actions like renaming scripts or resolving merge conflicts. A "Missing (Mono Script)" in the Inspector signifies a broken reference to a script that Unity can no longer locate. This can lead to unexpected behavior, such as lost collision logic or AI functionality. Manually inspecting prefabs is feasible for small projects but quickly becomes impractical as projects grow. A more efficient solution involves creating an Editor script to automatically scan all prefabs for these missing components. This custom scanner uses AssetDatabase.FindAssets to locate prefabs and PrefabUtility.LoadPrefabContents to inspect their hierarchies. The script recursively checks each GameObject for missing scripts and reports the paths of affected prefabs. For improved usability, the scanner can be enhanced to display results in a custom window, allow direct navigation to the broken prefab, and even automate the removal of missing components. Regularly running this scan, particularly before release builds or after significant project changes, helps prevent costly late-stage discoveries. Integrating this prefab scan into a broader validation workflow, alongside scene checks and build configurations, ensures a more robust development process. Ultimately, automating the detection of missing scripts transforms a fragile manual task into a reliable validation step, saving significant time and preventing avoidable errors.