Checks & deposits still outstanding as of last month's reconciliation
Upload last month's BR/Schedule workbook — the most recent "S_" schedule sheet is auto-detected — or enter the carryover items by hand. Leave this empty for a first-time reconciliation.
Bank statement
Columns expected: Date, Description, Debit, Credit, Balance, Cheque Number — the format your bank export already uses.
Book records
Your account ledger export (TransDate / TransType / ReferenceNumber / Payee / Debit / Credit), a WP working paper, or a simple register.