In GL, you can dynamically create new account code combinations when entering data by enabling dynamic insertion in the Key Flexfield Segments window. The alternative method for this is, you can require all accounts to be define manually in the Accounts Combinations window.
Points to Remember:
-Dynamic instertion can be enabled or disabled at any time.
-You can define cross validation rules to prevent incorrect account combinations from being created by dynamic insertion.
-If you are defining an Accounting Flexfield for Oracle Projects, you must define your segment with the Allow Dynamic Inserts option set to Yes.