Sending the A/P vouchers to KSeF Open the A/P Vouchers and Adjustments form. Select the KSeF tab. Select KSeF in the KSeF Indicator field. Specify the KSeF ID in the KSeF ID field. Note: This ID is displayed in the supplier invoice that is downloaded from the Ministry of Finance website. Click Save. Note: The KSeF tab is displayed only if, the Poland – JPK_V7M version 3 is enabled on the Feature Management form.