INVALID_REQUEST_ERROR | BAD_REQUEST,

• Merchants will need to get in touch with Square to verify their identity. Their account might not be enabled to take payments.
• Location ID might be incorrect

AUTHENTICATION_ERROR | UNAUTHORIZED,

• Invalid Credentials have been entered in the OpenPath Connector for Square

PAYMENT_METHOD_ERROR | PAN_FAILURE

• This is a correct response when using a Test Card on a live Square account