Calculating the sum of incentive amount for each sales person with a given condition

Hello guys, I am stuck in a calculation. Actually, I am reporting a sheet on a daily basis recently i've added a column called incentive amount and i was calculating total sum of incentive amount for given models. It was running well but now there is a problem arise. One of salesperson sold a model which is already present in incentive sheet but in lower price, still in daily sheet it calculate incentive amount.

I am attaching a screen shot of  demo data.

Let me explain you one by one- There is total three different sheet 

1 sheet - sale report - where all the sales details present 

2 sheet- incentive model sheet - where incentive model , minimum price to sell those model, and incentive amount

3. Daily reporting sheet - Sales person name and incentive amount

Now what I want sum of total incentive amount for each salesperson but condition is salesdetails[amount] >= Incentive sheet[amount] only if condition is satify then sum otherwise leave that cell.  

 I m using this formula to calculate but showing #N/A - Formula - =SUMPRODUCT((B5:B11=L4)*(C5:C11=G5:G7)*(D5:D11>=H5:H7)*(I5:I7))

Please help me to get rid out of this ...