After Contra Posting, the allocations can be seen from Transaction Enquiry.

Depending on whether the Working Periods feature is enabled and on your Security Profile permissions, it may be possible for you to continue to post financial changes, for month end procedures, even after the posting period has been advanced; in this situation the Period becomes a drop-down and you can select the appropriate period.

Full instructions on the methods to open Enquiry windows is covered in Dimensions Help.

The allocation window shows the amendments to both the sales and purchase transactions.