We're unable to delete exceptions, Pictures London.
Exceptions are indicators on your books that there are adjustments made on your VAT return.
Your added adjustment will show on your next return in the Exceptions column. You can inform HMRC about it when you file our next return or you can speak with your tax advisor. You can find more information about it in this article: VAT exceptions and reports.
If ever you'll encounter incorrect information on your next return, you can contact our QuickBooks support. We'll be able to check and correct them for you.