When Re-Authorising my interaction with VAT I get the error Error An unexpected error occurred. Please ensure that you are making a valid request and try again later.

Thanks for making it here in the Community, malcolm.jack.

The message you're getting when trying to re-authorize VAT interaction can sometimes be caused by a large pile of cache in your browser. There are times when a browser's cache data becomes full of frequently-accessed pages or damaged.

We can follow some troubleshooting steps to fix this. First, let's try using a private or an incognito browser. Follow these keyboard shortcuts to start an incognito session:

Kindly use either of the following shortcut keys:

• Google Chrome: Ctrl + Shift + N
• Mozilla Firefox: Ctrl + Shift + P
• Safari: Command + Shift + N
• Microsoft Edge: Ctrl + Shift + P
  
  

If this works, proceed to delete your browsing history to clear out the cache or data that's causing the issue. Use this article as a guide: Clear cache and cookies to fix issues when using QuickBooks Online. Otherwise, try using a different browser to be more thorough.

For your reference with VAT processing in QBO, check our Resource page through this link: VAT for QBO United Kingdom.

Let me know if you have other concerns or questions about the VAT process. I'll be around to help. Wishing you the best of luck!