Yu-Bin Biz Card numbers are now optional to register a Zonos carrier account on or to create Zonos shipping labels on Ship&co. Only the Account Key is required.
Note that the Biz Card number input is still required to create the postpaid slip (後納差出票) on Ship&co - shipping labels created without it will not appear on the postpaid slip. You can add your 32-digit Yu-Bin Biz Card number anytime in the Zonos settings under Carriers > Zonos
