Accounting transactions are originated as a result of normal business activities in Financial and Manufacturing modules of Oracle Applications, as well as in external modules. In order to register those transactions into the
General Ledger, a process called Journal Import must take place.
This process works based on the existing data in an interface table. The table is called
GL_INTERFACE. Each sub-ledger populates this table through one or more specific processes. Once the
information is in the interface table, the Journal Import process loads the General Ledger tables.
Steps involved in “Journal Import” are

1. Populate “GL_INTERFACE” table
2. Run Journal Import by “Source” and/or Group Id
3. If there are errors in JI, correct the errors using the “Correct Journal Entry” screen
4. Once data is imported, Oracle creates a batch of “Journals” that is ready for positing.
5. Post the Journals in GL.