Domain registration may fail with the the error Error: Invalid Payment Method. Valid options include
Log in to the ZA Domains Reseller Client Service.
Access the My Details page by clicking on the profile drop down menu selecting Edit Account Details
On the My Details Page scroll down to Payment method
Change your Payment method from Use Default (Set Per Order) to EFT (Bank Transfer)
Click Save changes
Other errors may include
Error: Invalid Payment Method. Valid options include banktransfer
Error: Invalid Payment Method. Valid options include banktransfer,payfast
Error: Invalid Payment Method. Valid options include banktransfer,payfast,paystack