This table contains the detailed journal lines that make up a transaction in the Handled IC Inbox Trans. table.
When you set an action on a line in the IC Inbox Transaction table and then complete the action, the transaction is moved from the IC Inbox Transaction table to the Handled IC Inbox Transaction table. If the transaction originates from an intercompany journal, the corresponding lines are moved from the IC Inbox Jnl. Line table to the Handled IC Inbox Jnl. Line table.
You cannot change any of the fields because the transaction has already been handled.