Business case - pre payment & settlement QR code

I would appreciate your advice on the following points:

If the pre-payment of 115 includes VAT:

  1. If the settlement amount is also 115, should the settlement invoice display a QR code for 115, or should the total show 0 with the VAT amount of 15 separately? or what should the QR disply the amounts .
  2. If the settlement amount is more than 115 like 1000, how should the QR code display the amount? Should it show the sum of the pre-payment and the settlement, or should it only display the difference between the two?

Looking forward to your feedback.

dear @Ankit_Tiwari

please advise as it’s impact on our bussiness now should the pre payment get the Qr and if the settlement = the pre payment should we issue Qr with the same value for settlement invoice