Please consider supporting below scenarios for report "Report sales tax for settlement period" (Sales tax (Itay)):
[ITA] Customer is using the functionality of Invoice register and Invoice pool in an Italian legal entity.
Register and pool are processed on the same date and the same voucher.
Once the user runs Sales tax book report it is showing wrong base amount and tax amount (doubled).
[ITA] Customer is using the functionality of Invoice register and Invoice Approval in an Italian legal entity. It might happen that the invoice approval is done in the next month, while the previous month is “on hold”. In this scenario, invoice approval is posted with a different voucher than the invoice registers and it is not shown in the sales tax book report.