Version 2.99 and up

Use Case 1

1. Invoice a Campaign Item
2. Cancel this Campaign Item and invoice the Cancellation
3. Run the Accounting Record Process.
4. IMPORTANT: Run the Accounting Record Process again.

Results: 

It might happen that the first accounting process run picks up only the initial invoice and not the cancellation. You will receive a warning in your email telling you that the invoice XY is a cancellation without Accounting Records for your original invoice and therefore no accounting records could be created. You will have to run the accounting process a second time which will clean up the gap and process the credit note of the cancellation. The accounting record creation process has to do this as the system can't guess the order in which you are creating invoices, cancellations, or credit notes. Multiple runs and an email notification will ensure data consistency.