Purpose
What this converter does
Upload the original XLSX workbook. Inspect the selected worksheet, map real columns when needed, choose an existing BOOKING or VALUE date and confirm the same currency on both accounts. ValidConvert passes the original OOXML bytes to Java and returns Date,Description,Amount when representable.
Workflow fit
When this route is useful
For transactions belonging to one real bank account in an XLSX workbook, suitable for the QuickBooks Online US three-column import profile.
Implementation note
What to expect
US profile only, up to 999 transactions. No currency is embedded in the output. Formula cells, hidden sheets or rows, damaged leading zeros in account IDs and ambiguous worksheets are not certified by the browser. Java must verify or reject unsafe workbooks. No FX, automatic import, de-duplication or Intuit certification.