I have made an error in a previous VAT report. The new KF doesn't let me unsubmit/delete/alter any VAT report. I have emailed support to delete an incorrect VAT report but it's been 4 days and it has not been done yet. We have deadlines and would need full control over our VAT reports.
HMRC advise that once a VAT return has been submitted to HMRC, any mistakes that are identified should be corrected on the next return if they are under £10,000. Any mistake above this figure should be notified to HMRC directly. In the rare circumstances that a return should legitimately need removing, e.g. if advised to do so via HMRC, we will have to do this manually via Development.