My flow misses SharePoint rows because Get items only returns part of the list

Power Automate Get items often returns only part of a SharePoint list due to the 100-item default, Top Count, pagination settings or the 5000-item threshold. Flows run green while missing rows, so reports, migrations and updates stay incomplete until retrieval is proven.

This is a researched blocker from Power Automate Builders. Below is the solution path — from understanding it to a paste-ready asset.