Platform upgrade changed underlying system behavior, APIs, or business rules that the ATF tests depend on, causing test assertions to fail with updated system responses. (high likelihood)
Upgrade skipped files or customizations were not properly applied, leaving tests expecting old system behavior while the platform operates with new logic. (high likelihood)
Test data or reference records were modified during the upgrade process, causing tests to fail when they cannot find expected baseline data. (medium likelihood)
New platform validation rules or mandatory fields were introduced that conflict with test step configurations or test data creation. (medium likelihood)
UI changes in the upgraded platform broke UI-based test steps that rely on specific form elements, buttons, or page layouts. (low likelihood)