Modify invoice locked in a VAT period

Grace here from Hemyock Engineering Services Ltd. We have a number of items to recategorize which we have inadvertently put in the wrong category. We also have a few items where the description of the item needs to be changed. Unfortunately we do not seem to be able to do this as the VAT return has already be sent and has locked all descriptions and categories.
Thanks for your help,

I think we are going to have too many items to journal, would rather get them in the correct place.

The only way to modify invoices that have been reconciled in a VAT return is to rollback that return. It sounds to me like really all you need to do is journal the differences. You don’t need to enter a journal for every invoices, just work out the totals and move the balances over in one lump sum.