Financial year wise separate sales invoice number, voucher series is require to file the GSTIN return. This is a basic requirement of GST. Based on the Transaction date need to be generate the Invoice number or Voucher series and other document series.

There is a requirement from users to post Last FY sales invoice ( Free test invoices ) from the system. If user post sales invoice using free txt invoice System should pick next number from last FY posted . Also if user post free test invoice for this FY year system should pick the number defined in this FY .

Currently system is not allowing to map two different number sequence for free txt invoice based on FY

There is no option available to define multiple period wise number sequence series in single number sequence code in AX for free text invoice

For Example - for Free Text invoice - Number sequence For FY 17-18 - Effective date - 01-Mar-2017 to 31-Mar-2018 -- SIV -17-18-99999 . In this case if user post sales invoice on 31-Mar-2018 on 10th April system should pick the next invoice number posted from number sequence code FY 17-18