Why is Excise Supplementary Sales Invoice Captured in Excluded Transactions?

An Excise Supplementary Sales invoice is raised against the original sales invoice to account for the increase in price per unit and the rate of duty.

It will be considered in Included Transactions if:

●     The invoice number and date of original sales are available.

●     Both the original and supplementary invoices are of the same month.

Consequently, the Excise Supplementary Sales invoice will be captured in Excluded Transactions if the original and supplementary invoices don't belong to the same month.