achamely
commented
3 years ago @GnWorld
txn-mempool-conflict表示您的TX尝试花费的一个或多个UTXO已在先前的TX（已确认或未确认）中使用。 如果要在本地创建事务，请确保跟踪已使用的UTXO数据集。 如果您使用外部服务来创建TX，则在继续之前等待所有当前事务确认。
txn-mempool-conflict means that one or more of the UTXO's your tx is trying to spend is already spent in a previous tx (confirmed or unconfirmed). If you are creating the transaction locally please make sure you keep track of the UTXO dataset that is already used. If you are using an external service to create the tx, then wait for any current transactions to confirm before continuing.
我的一个地址（1BxQn4RXb1GqXvyzbd7hwNVpRYMhCwHAaq）发送交易数据时提示 txn-mempool-conflict ，希望能得到您的帮助，下面是我的代码 let host_omniexplorer = "https://api.omniexplorer.info" let hc = new HttpClient() let postdata = "signedTransaction="+hex hc.post(host_omniexplorer+"/v1/transaction/pushtx/",postdata)