Normally commission amount shows up with sales amount in report,but I recently had a strange event. Commission amount showed up without sales amount on Nov 24. I thought this is unusual and doubted it was valid. On Dec 10 it was reversed. It was 16 days after the supposed transaction date Nov 24. I am not complaining this reversal. All I want to know is the reason why commission amount showed up without sales amount. Anyone experienced the same before? Could someone explain why and how this happened?