How to adjust amount of an already generated invoice for a specific flat?

The amount of an already generated invoice for a specific flat can be adjusted in two ways:

1. By issuing a credit note against the invoice. Refer to the following FAQ to create a credit note for a flat: https://adminfaq.mygate.com/articles/129812-how-to-create-a-credit-note-for-a-flat

2. By creating a journal voucher to transfer the amount to the flat’s advance ledger. Refer to the following FAQ to create a journal voucher: https://adminfaq.mygate.com/articles/131068-what-is-journal-voucher-and-how-to-create-a-new-journal-voucher