Review the controls that make a closing report explainable. A balance can be correct by coincidence, so keep source references and the population definition with your totals. Inventory value, received-not-invoiced value and open supplier exposure answer different questions. Compare like measures before calling a difference an error.
Each task is independent. Some use prepared entries to test signs or account scope, while others ask for an export or a closing action. The requested date is part of the result. Keep the ledger amount signed as debit minus credit, and preserve document keys in spreadsheet sources. These exercises review the existing tools rather than introducing new closing policy. Use only the evidence and closing authorization stated in the task.