Hi
If you declare goods into a customs special procedure, you can select that you’ll be accounting for import VAT on your VAT Return when you submit the declaration that removes them into free circulation from the following special procedures:
customs warehousing
inward processing
temporary admission
end use
outward processing
duty suspension
If errors have been made on the import declaration in terms of incorrect EORI numbers being used then you would need to contact the shipping agent involved so that they can complete a post import ammendment which will then be reflected on your next Postponed VAT Statement.
The VAT should only be accounted for once on your VAT return for an import and so again you may need to speak with the shipping agent to make sure that this doesn't happen again.
Please see the guidance below for how you would complete your VAT returns to account for imports made under Postponed VAT Accounting:
Complete your VAT Return to account for import VAT