Once you've created a split test, you might want to make changes to your campaign, ad set or ad. For example, if you notice that the headline in your ad has a typo, you'll want to fix the ad without cancelling the whole test. To do that, just edit your ad set or ad in Ads Manager just as you would in any other situation. Learn how.

However, remember that changing your split test after it has started may impact its results. Here are some best practices for editing split tests:

• Only edit your campaign, ad set and ad when it's absolutely necessary. All edits can affect the accuracy of your results, so you should only edit your campaigns when it's necessary. If the change isn't necessary, you can always create a new test.
• Avoid making significant changes to the variable that you're testing. If you make changes to the variable while the test is still running, you may not be able to know why the winner won.
• Use caution when making changes to things other than your variable. Editing the audience, placement, creative and other factors can affect the results and undermine your understanding of what drove the results. For example, if you test two different audiences with the same ad creative, and then later change the ad creative, this change might cause one audience to interact more with the ad. When the split test is done, you won't know if the winner was determined based on the audience or the ad creative.

You may also want to cancel your test. To do that:

1. Go to Ads Manager.
2. Tick the box next to the campaign that includes the split test you want to cancel and open the side panel by clicking the icon.
3. From the drop-down menu links, click Cancel test.
4. Click Confirm and close.

After cancelling your split test, your budget and audience will no longer be divided between your ad sets. If you cancel your split test, no winner will be determined and you won't get a notification or email with results.

* Nguồn: Facebook