This option works in exactly the same way as the 'Enter Ad hoc Invoices' command. Depending on a preference set in the Data Manager, it can use the same or a different number sequence to that used for Invoices.
When entering Credit Notes, ensure that a negative figure is entered for the Price on each line.
If you wish to credit an existing Invoice, select this menu item and then immediately select 'Copy Previous' from the Functions menu. Type in the Invoice Number that you wish to copy
to the dialogue box that comes up. Each Invoice Item will be copied to the new Credit Note for checking prior to printing. Again, ensure that each Item has a negative Amount.
If you make an error in an Invoice, you should always correct it using a Credit Note. This will ensure the integrity of your Sales Ledger and of your Control Accounts. Do not attempt to make such corrections by journal in the Nominal Ledger.