Are you unable to send e-invoices using your accounting package? And do you send invoices to the Central Government from time to time? In this case, please use the Supplier Portal.
To the Supplier Portal
Enter the information from your invoice into the Supplier Portal. Next, use the Supplier Portal to send the e-invoice to your client. Download a copy of the e-invoice for your own records. You can only use the Supplier Portal to send e-invoices to the Central Government.
How does the Supplier Portal work?