Before a landing page can be used, it must be valid.
A validation status indicator is displayed to the right of the landing page’s name. When the landing page is valid and contains no validation errors, the validation status indicator is shown as follows:
Specific validation errors are outlined in the landing page documentation. When one or more validation errors is present, a validation error indicator is shown:
Clicking the indicator lists the validation errors in a dialog:
You can use the button at the bottom left of the dialog to copy the validation error details to the clipboard. You can close the dialog using the OK button.