Firstly, let's start by updating the value of the 'NHS Test'

  • Goto 'Stock Menu -> Option 2'
  • Open the stock record for 'NHS Test' (this is usually code 'N')
  • Update the amount to the new value
  • Press 'Ctrl+Enter' to save

Secondly, we need to update the invoice payment values for vouchers

  • Goto 'Till / Invoice' menu
  • Goto 'Maintenance -> Payment Method / Voucher Values'

  • Click on the button shown below to alter the values shown

  • Update the value in 'Inv Pay Val1'

  • Press 'Ctrl+Enter' to save
  • Repeat this process for each voucher value that needs updating