Go to Functions, Reverse Invoice

1. Select Yes to confirm
2. Enter password at Security Prompt

Optional steps to recreate, modify and post invoice again.

Also another optional step to change settings to allow invoice to post on a different date than today.

4. Go to Functions, Create Follow-up Invoice

5. Modify follow-up invoice and post again.

6.  If interested in posting on a separate date:

Go to Application Settings, Invoicing and Select Invoicing Option to Prompt for Invoice Date when posting

Optional Steps:

Application settings that you must select in order to change posting date:

Shows how you are prompted when posting an invoice