Open Striven and you will need to make an Debtor account sale via POS

Do a Adjustment note on the same invoice by clicking F3 and Adjustment note.

Select Option B

Once the Adjustment note is complete, Go to Debtors, Processes and then Unhide/Hide transactions

The following pop up window will open and you will need to input the Invoice from the account sale under Debtor invoice and the adjustment note invoice under Debtor adjustment note like the example

The Hide/Unhide must cancel each other out and match.

If successful you will get the first image and unsuccessful on the second one