In RI (Anthos) R3 M19 pre-ship environment the search Policy is defined at the instance level and not at the partition level
To execute some of the test to check the workings of Dynamic policy, it has to be defined at the partition level so that average user has correct permissions (does not require elevated permissions) to perform the workflow used in testing.
Because the search policy is defined at instance level, tester is not able to perform the workflow related to the search policy.