In this configuration activity you are able to go one step below the splitting rules and make business transaction variants which will specify how the splitting will occur for the related business transactions.
IMG Path: Financial Accounting (New) -> General Ledger Accounting (New) -> Business Transactions -> Document Splitting -> Extended Document Splitting -> Define Business Transaction Variants
Tables: T8G031, T8G03, T8G03T, T8G28, T8G29, T8G02, T8G02T, T8G031T
When you enter into the transaction you will see a list of predefined business transactions. Highlight a row for which you want to see the Accounting Transaction Variant.
On the Accounting Transaction Variant Screen you create a new entry, modify an existing one or jump to the “Assigned item categories”.
On this screen you could make changes on whether something have to be mandatory, forbidden or appearing only once.