In this configuration activities you could define GL Accounts ranges and related Business Transaction Rules which should apply how the document splitting will be performed.
IMG Path: Financial Accounting (New) -> General Ledger Accounting (New) -> Business Transactions -> Document Splitting -> Classify G/L Accounts for Document Splitting
Table: T8G17, T004, T8G02, T004T, T8G02T
Choose your Chart of Accounts.
Define you ranges and assign category business transaction.