And I'm only trying this for Registering "Business Account" on sandbox.
This link would help click here
Try using this format xxx yyy zzzz (308 555 1234) to get past the code and get into the account. Then once in the account, you can update the account information to the correct phone number through Profile> phone number.
Frank I.
PayPal Certified Developer
PayPal PayWatch Analyst
http://www.paypaldeveloper.com
PayPal, an eBay Company
This link would help click here
A social security number needed to be added. This can be done by you, the number must start with '111'.
Frank I.
PayPal Certified Developer
PayPal PayWatch Analyst
http://www.paypaldeveloper.com
PayPal, an eBay Company