淘宝退货填单号的具体操作方法如下：
1、打开手机淘宝APP，点击右下角的我的淘宝。
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2、进入页面后，点击-退款/售后。提交了之后，就到了等待商家处理的时候，期间也可以撤销退款，修改退款，以及在商家拒绝退款后申请客服介入。
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3、进芦蚂迟入-退款/售后页面，点击要退货的商品右下侧的-查看详情。
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4、商家后续同意退款后，就需要把快递物扮寄出去，可以在线下单，让快递员上门取件，或者咱们自己去寄快递，然后点击我已寄出，在寄出页面填写物流单号，并且提交等待商家确认收货即可。
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5、填写物陪李流单号，和退货的详细信息。
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6、填完后即可出现该页面说明填写成功。然后就等待商家确认收货则退货成功。
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