When I try to report VAT, I get this error:
We’re having a problem preparing your VAT Return
Error: DUPLICATE_SUBMISSION - The VAT return was already submitted for the given period.

I have double-checked date rage, it was correct and there isn’t date overlap.
(Last quarter, there was no error and it worked fine)

Thank you for your help.

Hi @greenweb

There have been a limited number of users experiencing this same error. We have been in contact with HMRC and it is up to them to manually update, so, unfortunately, is out of our hands. You will need to contact the VAT helpline for them to rectify the file for you.

The returns will have been filed, if you want to check via QuickFile you can actually click to view the last filed return then manually change the period key in the URL.

Hope this helps

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