Intracompany balancing rules are used when more than one balancing segment value exists on a transaction or journal entry, as long as you have selected the Balance Intracompany Journals option for the ledger. You cannot post a journal in general ledger when the debit and credit amounts for each balancing segment value do not net to zero. These journals can be balanced automatically if you setup balancing rules and enable the option to balance cross-entity journals.
You must define intracompany balancing rules if you want to balance journals automatically. You may define as many or as few balancing rules as you choose, and each balancing rule may have many accounting rules. Because balancing is an automated process, there should be at least one balancing rule with at least one accounting rule to proceed. This default balancing rule should be defined for the journal source Other and journal category Other for the ledger and legal entity you wish to balance. The default accounting rule on each balancing rule is defined for the debit balancing segment value All Other and credit balancing segment value All Other.
By Vivek Upadhyay.