Should non-uniformly updated live regions use the ARIA busy attribute?

I am facing an issue while testing for accessibility.

I have used role="alert" for an error message [single level]. Do I need to use aria-busy="true" / aria-atomic="true" / aria-live="polite"

<td><span role="alert" class="error-msg-show"></span></td>

I have already defined `role="alert" but do I need to use any other ARIA attributes?