垫付退款回补(平台收付通)

提交垫付退款后，发起退款方可通过该接口发起垫付退款资金回补，把退款垫付的资金从二级商户回补到电商平台账户。 官方文档 官方文档

wxpay.v3.ecommerce.refunds._refund_id_.returnAdvance.post({
  sub_mchid,
}, { refund_id })
.then(
  ({ 
    data: {
      refund_id,
      advance_return_id,
      return_amount,
      payer_mchid,
      payer_account,
      payee_mchid,
      payee_account,
      result,
      success_time,
    },
  }) => ({
    refund_id,
    advance_return_id,
    return_amount,
    payer_mchid,
    payer_account,
    payee_mchid,
    payee_account,
    result,
    success_time,
  })
)

查询垫付回补结果(平台收付通)

提交垫付退款回补后，通过调用该接口查询垫付回补结果。 官方文档

wxpay.v3.ecommerce.refunds._refund_id_.returnAdvance.get({
  refund_id,
  params,
})
.then(
  ({ 
    data: {
      refund_id,
      advance_return_id,
      return_amount,
      payer_mchid,
      payer_account,
      payee_mchid,
      payee_account,
      result,
      success_time,
    },
  }) => ({
    refund_id,
    advance_return_id,
    return_amount,
    payer_mchid,
    payer_account,
    payee_mchid,
    payee_account,
    result,
    success_time,
  })
)