How to resolve this error when adding your phone to your Battle.net account

Troubleshooting steps for payment error: Sorry, we're unable to complete your payment.

Information about this Call of Duty error

Standalone patches are downloaded outside of the game launcher or the Battle.net desktop app.

Information on the BLZBNTGFT00000114 error

Information on the BLZBNTTAS00000007 error code

Information on the BLZBNTGFT00000115 error

Information on error BLZBNTAGT00000960

Information on error BLZBNTBNA00000FB1

Information on error BLZOWPAY10200279.