If you receive the “Change Winner Conflict” error message, this means you are trying to “Select a Winner” for a product that currently has a Running test (for a different variable). This would lead to multiple variable changes that overlap during the duration of the test and would make it impossible to know which variable change helped or hurt the overall test performance. This also means you should never modify a product listing outside of the app when you have a running test for that same product (for the same reason).
