Field-level Errors

Field-level errors are displayed when an input validation error occurs on the field. Input components in the lightning namespace display a default error message when an error condition is met. For input components in the ui namespace, the framework creates a default error component, ui:inputDefaultError, which provides basic events such as click and mouseover. See Validating Fields for more information.

Alternatively, you can use ui:message for field-level errors by toggling visibility of the message when an error condition is met. See Dynamically Showing or Hiding Markup for more information.