为什么C&L清单中充满了未经验证的分类数据，却被用作IT筛选的选择标准？当通报和REACH注册之间的分类不同时，如何判断？

为什么C&L清单中充满了未经验证的分类数据，却被用作IT筛选的选择标准？当通报和REACH注册之间的分类不同时，如何判断？

Why is the C&L Inventory used as part of the selection criteria in the IT screening when it is filled with unverified classification data? How do you decide when the classification differs between notifications and REACH registrations?

C&L 清单是用于识别潜在关注物质的来源之一，因为它概述了该物质在欧盟市场上的分类方式。我们会考虑每个分类背后的通报人数量以及通报的一致性。C&L 清单中不同的分类可能揭示制造商和进口商在物质分类方式上存在分歧，这可能需要采取统一分类和标签等监管措施。IT 筛选结果会由 MSCA 在手动筛选过程中进行检查。一般而言，我们更重视来自 REACH 注册的分类，但来自通报人的分类通常也能为相关物质提供有价值的见解。

The C&L Inventory is one of the sources used to identify substances of potential concern as it represents an overview of how the substance is classified on the EU market. We take into account the number of notifiers behind each classification and the consistency of the notifications. Diverging classifications in the C&L Inventory can reveal disagreements among manufacturers and importers on how to classify the substance, which might require regulatory action such as harmonised classification and labelling. The IT screening findings are checked by MSCAs during manual screening. In general, we place a higher emphasis on classifications coming from REACH registrations but those coming from notifiers often provide valuable insights into the substance in question.