To amend the sort key on each individual account:
Click Debtors, Customers
Go to Account which requires amending
Click Edit
Next to the field which needs changing, click the Magnifying glass icon.
Select the Sort Key required.
Click Save
If a bulk update is required, this will need to be done by Support or a consultant. Therefore please raise a new case and reference the title of this article and please include details of how many customers need changing.