1. Go to the invoice you want to credit via the heading Invoices
2. From Invoices, choose the invoice to credit
OR
1. Go to the invoice you want to credit via the heading Accounts
2. From Accounts, choose the account with the invoice
2a. In the account, go to Invoices, and choose the invoice to credit
3. On the invoice, press the three dots, then press Credit Invoice
4. Choose invoice line to credit by checking the box next to it OR press the upper checkbox to pick all lines to credit
5. Set the date for the credit invoice
6. Press Create Credit (this will make a credit invoice draft)
7. When the confirmation box pops up, press Yes
8. Press Post to post the credit invoice