Post-Brexit, EU-Non VAT Registered is not an applicable treatment, and customers with this VAT treatment must be updated to Overseas. Also, EU-VAT Registered is applicable only if you are trading goods between Northern Ireland and the EU, else the VAT treatment must be updated to Overseas. You can bulk-update the VAT treatments for your customers. Here’s how:
The selected customers’ VAT treatment will be updated to Overseas.
and GST filing.