When you post an entry using dimensions to a ledger, for example to the general, customer or vendor ledger, the program creates a record of these dimensions in the Ledger Entry Dimension table.
Ledger entries can be created in the following ways: by posting a general journal; by posting a sales order, invoice or credit memo; by posting a purchase order, invoice or credit memo; by posting cash receipts and payments to vendors; by posting finance charge memos and reminders; and by running batch jobs.
You cannot change the contents of the fields in the Ledger Entry Dimension table because the entries have been posted.