The term single-sided transactions refers to transaction rows that either have no accounting implications or have yet to be matched with a corresponding debit or credit entry before being posted to PeopleSoft General Ledger. You can enter single-sided transactions in PeopleSoft Project Costing by using the Add Transactions page, through integration with other PeopleSoft or third-party applications, or by using PeopleSoft Project Costing-specific features such as interest calculation.