预约扣费

商户在进行委托代扣费前，需要提前在微信支付系统中预约扣费，预约成功后方可在约定时间内扣费。 官方文档

wxpay.v3.papay.pay.partner.schedules.contractId._contract_id_.schedule.post({
  sp_appid,
  sub_mchid,
  sub_appid,
  schedule_amount,
}, { contract_id })
.then(
  ({ 
    data: {
      schedule_state,
      deduct_start_date,
      deduct_end_date,
      scheduled_amount,
      deduct_amount,
      deduct_date,
    },
  }) => ({
    schedule_state,
    deduct_start_date,
    deduct_end_date,
    scheduled_amount,
    deduct_amount,
    deduct_date,
  })
)