Yu-Bin Biz Card numbers are no longer required to register a Zonos carrier account on or to create Zonos shipments on Ship&co. Only the Account Key is required.
Note that the Biz Card numbers are still required for the postpaid slip (後納差出票) output, shipments created without them will not appear on the postpaid slip. You can add your 32-digit Yu-Bin Biz Card numbers anytime in the Zonos settings under Settings > Carriers.
