When receiving a"Header row must be identified with the letter 'H' "error, it usually means that the excel spreadsheet is corrupted.
Copying the data into a new spreadsheet will resolve the issue.
If this does not resolve the issue you can try the following:
- Check that the action dates in the HEADER correspond to the action dates in the FOOTER.
- Check that the total number of RECORDS in the HEADER corresponds to the total number of records in the footer.
- Check that the TOTAL AMOUNT is correct. You can double check by selecting all cells in the amount column and click AutoSum
Please contact Wirecard support if none of the above resolved the issue.