On the Commission Earned report I am having a problem with sales people being listed on the report who are not paid commission.  They appear on the report with zero Dollar commissions.  Does anyone have any suggestions as to why this is happening and how I prevent it.  It does not happen to all their sales just certain ones.
 
We have two types of sales people.  In house sales people do not get commission and outside agents who are paid commission.  It is the inside sales people that are appearing on the report with zero dollar commissions.