Alerts appear in the top right of the Action Bar when you're editing a Guide. Alerts are there to remind you that what you're seeing on the screen doesn't correspond with the settings of the Guide.
This error indicates that the location of the step that you're in is not the page that is open in the Guide designer.
Target Element Not Found
Usually, this error appears when using a Tooltip, and indicates that the element that the Guide is targeted to doesn't appear on the page.
Button in Step 1 has an invalid action
This warning appears when you have a multi-step Guide and use the “previous step” action in your first step.
Navigating to the correct page will usually resolve the first two alert types.
Tip: If you're just editing text and content, there isn't a need to resolve the alert. You can open the designer on any page to make your edits and save, and the Guide will publish per the existing Guide settings. Resolving alerts can be helpful to give you peace of mind when editing.