Value Entry is considered a “Leder Entry” as far as Dimensions go. The field names in the Ledger Entry Dimension table are pretty self explanatory, though. There’s a Table Number, an Entry Number, a Dimension Code, and a Dimension Value. You’ll use the first two as the link between the tables.
You should use the Entry No. That is the primary key of the Value Entry table. Value Entries have a one to many relationship with Item Ledger Entries. If you can, design the Ledger Entry Dimension table. Look at the table relationship for the Entry No. field. You’ll find all of the relationships.