It's not just a one-to-one relationship, Clint. Job Cost accounts ARE GL accounts - they are just viewed differently when using the JC module. That means that every JC account consists of an F0901 record, a balance in the F0902, and detail in the F0911. The JC module looks at the GL records - there are really no transactional files in the JC system. They are all in the GL. It's not so much that Job Cost and the GL are tightly integrated - it's that they are really the same thing, like the three blind men and the elephant.
When you set up a job, the system will create the Job structures in the GL. That includes the Business Unit from Job Master creation, and the F0901 account master records when you set up the account in the Account Setup/Original Budget screens. There is no need to set them up separately when you create the job.
What you DO need to consider when setting up job cost are such things as; Will work in progress be considered capital work in progress in the GL, cost of goods, or expense? The numbering sequences used for your cost types need to be coordinated with your GL accordingly. How will the Chart Types be defined to enable the project managers to see cost in a meaningful way, while still enforcing some standardization across projects to enable performance comparisons and reusability of historical cost and budget information? How are subsidiary accounts used in general accounting, and how does that impact job costing?
If you experience with other ERP systems, like Mincom, you may be accustomed to the project costing transactions and structures stored in a separate table. You'll need to adjust your thinking a little bit to implement this in JDE.
