中文内容由 Google Cloud Translation 自动生成，仅供参考；请以英文原文为准。问答资料来自欧盟化学品管理局（ECHA）官方网站。
答案（中文）
您可能需要更新您的通知，例如报告同一物质的新用途，或添加新的文档或站点。进行必要的更改之前，请在 IUCLID 中找到相关物质数据集或创建一个新的数据集。在您的数据集中提供必要的信息后，请转至 1.3 标识符部分并添加新文档，如下图所示：点击“监管计划标识符”下的“+ 新建项目”：选择“REACH 下游用户通知编号（第 66 条）”作为监管计划，并在“ID”下添加您的授权用途下游用户通知的参考编号：在数据集中提供所有必要信息后，点击“创建档案”：创建档案时，请勾选“此提交为更新”复选框，并输入上次成功提交的编号。有关如何检索上次成功提交编号的更多信息，请参阅问答 1479“我的提交失败，BR035”。我该怎么办？’。最后，勾选“自发更新”框并添加理由。完成卷宗创建并通过 REACH-IT 向 ECHA 提交卷宗：提交卷宗后，您将收到一个提交编号，确认您的卷宗正在处理中。有关如何提交授权用途下游用户通知的更多详细信息，请参阅本教程。
Answer (EN)
You may need to update your notification, such as to report new uses for the same substance or add new documents or sites. Before making the necessary changes, find the relevant substance dataset in IUCLID or create a new one.After providing the necessary information in your dataset, go to section 1.3 Identifiers and add a new document, as shown in the screenshot below:Click on ‘+ New item’ under ‘regulatory programme identifiers’:Select ‘REACH downstream user notification number (art. 66)’ as a regulatory programme and add the reference number of your downstream user notification of authorised uses under ‘ID’:Once you have provided all the necessary information in your dataset, click on ‘Create dossier’:When creating your dossier, check the checkbox ‘This submission is an update’ and insert the last successful submission number. For additional information on how to retrieve the last successful submission number, kindly refer to Q&A 1479 'My submission failed BR035. What should I do?'.Finally, tick the box ‘Spontaneous update’ and add a justification.Finalise the dossier creation and submit your dossier to ECHA via REACH-IT:Upon submission of your dossier, you will receive a submission number confirming that your dossier is being processed.For more details on how to submit a downstream user notification of authorised uses, please refer to this tutorial.