It should be possible to control on sales order, if the pricing should be carried out according the prices on the moment of order entry or if they should be redetermined when invoice is created.
i have used
USEREXIT_CHANGE_PRICING_RULE (module pool SAPMV61A, program MV61AFZA)
user exit to change the pricing type that has been predefined in the copying control table in billing
when i try to create the invoice this userexit is not being called .
so can anyone suggest me regarding the proper userexit i should use