To ensure that the seller's identity is unique and valid, one ID card can only open one store. Although the same person can register multiple Taobao accounts and Alipay accounts, after one Alipay account passes personal real-name authentication, it can also be associated with 5 Alipay accounts through authentication, but only the Taobao account bound to the Alipay main account that passes real-name authentication first can open a store, that is, the associated account does not support opening a store.