query to get data Effective Cost Date from Review Item Cost

Summary:

I’m currently struggling to retrieve information from the Review Item Cost to obtain the 'Effective Cost Date'.

Content (please ensure you mask any confidential information):

To calculate the Total Unit Cost, I’m using the table cst_vu_onhand_valuations , but I cannot find the source for the 'Effective Cost Date', as shown in the picture below.

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