问题如下：
Regarding the best practiece of data aggregation, which of the following is not a best practice？
选项：
A.To reduce the risk of errors and incomplete information, periodic manual reconciliations are needed.
B.Minimize the amount of manual intervention and manual data manipulation (i.e., spreadsheets) by automating the risk data aggregation process.
C.Standards, cutoff times, and timelines regarding the production of internal risk reports.
D.Ensure that legacy IT systems are integrated into the chosen IT system as soon as possible.
解释：
A is correct.
考点：data aggregation最佳实践
解析：Reconciliations 需要自动化，而非手动。
其他选项均属于最佳实践。
又是补充的知识点吗？
