Is it possible to get a rounding option in credit notes?
I think it should be available on every form receipts payments debit/credit notes orders etc
This seems like a dangerous idea. Credit notes should issued for specific amounts. Frequently, a credit note is issued for specific line items on a sales invoice, which may have been rounded. That rounding could easily have produced a different rounded price than might result from individual rounding on a credit note (possibly choosing a different rounding method).