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使用E发票助手，提示报错：E发票您的账号尚未开通使用权限，请尽快联系客户经理，或咨询官方电话：40085-12366

Time：2022-04-08

您好，e发票初次使用有7天使用期，七天试用期之后会报此错,无法使用，需要联系客服或者销售、运营添加白名单后使用，如果盘损坏更换过盘，盘号变更后需要重新添加白名单。感谢您的咨询，祝您生活愉快。

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单机盘用户开启百望云助手，右下角提示usbkey未打开，如何处理？

在哪里查看异常状态的发票

已经作废的发票，可以打印么？

百望云系统作废的发票可以打印吗？

进项企业黑名单在哪里添加？

使用百望云系统，发票打印显示成功了实际上打印机没有反应，如何处理？

调用[发票开具接口]失败，保存待开发票失败！失败代码【30507016】

如何将已开发票传到百望云系统？

税务数字证书口令是多少？税控盘和报税盘的口令是多少？

核心板变更企业信息，需要做什么操作

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