This knowledgebase article explains how to set up the journal codes: How do I set up Journals in General Ledger?

You will then need to assign the journal codes in the application settings for each application, for example, AP Settings > GL Entry Settings. You may want to look in each of your application settings first to see what kind of journal codes you will need before you start setting them up. For example, AP has Invoice journal and Payment journal, while CM has Deposit journal, Withdrawal journal, and Adjustment journal.

In each application (AP, JC, GL, AR, etc.), with appropriate security permission, go to the "Settings" menu (for example, AP Settings, AR Settings, etc).  Within the settings panel, you will see a button for "GL Entry Settings" where you will find the option to select the Journal you wish to use for the specified transaction types.   For example, in Accounts Payable you can specify a unique journal for the Invoice Journal and Payment Journal.

Journals are user-defined in the General Ledger application: GL > Setup > Journals.

Review the settings for each application to see the available options for specifying journals, and then setup the journals as needed. You can specify the same journal for multiple options in each application, but that will limit your ability to extract the level of detail from GL.

These choices only apply to new transactions created after your settings are changed.

Art Minds
Independent Senior Consultant
Pasadena, CA