For GL:

1. Set of Books(Chart of Accounts)

2.Calander

3.Currency

For AP:

1.Suppliers(Creditors)

2.Invoice

3.Look up codes

4.Selection of Set of Books

5.Payment Terms

6.Financial & Payable Option

7.Define Banks

For AR:

1.Flexifiled

2System option

3.Payment Terms

4.Open period

5.Auto Accounting

6.Transcation Type

7.Transcation Source