How can we have cash discount as well as vendor payment terms

Question

We have vendor payment term of 2% 10 days, net 30. On top of it the vendor gives us 4% discount on certain POs where the total PO amount exceeds 20K. We want to have the 4% discount on the individual line item at the time of the invoice posting and then additional 1% discount from the payment term. We donu2019t want the PO price to change due to the 4% discount.
In MIRO, it seems we can take either the cash discount (field WSKTO) or the discount from the payment term (field ZTERM).  How can we take both the discounts?

Answer 1

1 - The 2% 10 days, net 30
           It can be calculated using the Vendor payrment terms.
2 - The 4% discount which has to be applied on certain POs where the total PO amount exceeds 20K and should not change the PO price.
           I - Create a condition type with the calculation type A - Percentage and select the option Accruals in Control data 2.
          II - In the Calculation schema,
                                     Calculate the 4% value from the total of the PO Price.
                                     Untick the manual.
                                     Mark the condition type as Statistics.
                                     Enter a Condition Formula Calculation Rule (Calculation Type)  or Use the Requirement to activate if the
                                            value exceeds 20K.  
                                     Enter the Accrual key like (FR1, FRE ...) and assign the GL account to that.
                     By Maintaining this way, you affect only the internal price and not the PO price.