Abstract: A method determining one or more causes for discrepancies in a computerized accounting system, the method comprising using at least one hardware processor for: providing a set of theoretical causes for discrepancies between sub-ledgers of an ERP (Enterprise Resource Planning) system and a general ledger of the ERP system; providing a set of database queries corresponding to the theoretical causes in the set of theoretical causes; executing the database queries of the a set of database queries in the ERP system; receiving a set of responses to the database queries; and based on the set of responses, refuting or confirming each of the theoretical causes of the set of theoretical causes.