Sage x3 quick guide for today

Create an edit template
Create an edit template that contains the correct information for the VAT accounts. This will allow you to apply the changes in bulk.

Select the accounts to edit
Select the incorrect VAT accounts you have identified. You can use the multiple selection function to choose all accounts that match the search criteria.

Apply the changes
Apply the edit template you created to the selected accounts. Sage X3 will ask you to confirm the changes before applying them.