Difference in values between SIS & Trail Balance

Dear All ,

The Business finds discrepancy of values between SIS Reports & trail Balance .

Having analyzed , the customer statistics Group in the Customer master has been updated after generation of invoice. Due to which the the sales revenue has not been updated in SIS .

Could any one guide , how the revenue for the invoices of the above scenario can be updated in SIS Reports .

Quick Response will be highly appreciated .