Beat,
We moved to your solution with our professional customers based on your answers on this thread
www.joomlapolis.com/forum/255-developer-members-support/232038-invoicing-features
and this thread
www.joomlapolis.com/forum/255-developer-members-support/231684-5588-cbsubs-recurring-subscriptions-with-sepa-payment?start=12
We dont need an accounting solution, we have our accounting company for this. But at least we need invoices with correct data on them.
If a customer has been refunded, it should see a statement on its invoice regarding the data. We can add comments on the transaction id, but it would be good to also add the amount of refund being done and display it on the invoice somewhere.
Also the customer needs to see its invoice refunded and get it on its listing. The customer accounting department WILL use our invoices for THEIR accounting department.
so don't misunderstand, CBsubs needs to comply to accounting needs of CUSTOMERS at least. I can understand that you are not an accounting solution for users of cbsubs, but you are a provider of accounting pieces of information for CUSTOMERS and this is really important
Basically that's just a problem of correctly displaying the information for customers...