MIRO with fixed exchange rate ticked with multi PO error M 8265 Collision exchange rate

Hello,

I tried to create one invoice verification ( T code MIRO) with reference to several purchase orders.

Purchase orders have fixed exchange rate ticked, each different exchange rate

I want each PO's exchange rate to be applied to IV item according to customer's requirement.

For example :

PO #1 10 10 USD ex rate 1000 KRW fixed exchange rate ticked

PO #2 10 20 USD ex rate 1100 KRW fixed exchange rate ticked

------------------------------------------------------------------------------------------------------------

IV #1 with PO reference to PO #1 & PO #2

PO #1 10 10 USD ex rate 1000 KRW

PO #2 10 20 USD ex rate 1100 KRW

Total : 30 USD 2100 KRW

Error Message : Collision: fixed exchange rate for PO. Divide the invoice up with the same exchange rate and currency in each case.

Is there any way to do IV with different fixed exchange rate of POs ? We have to do.

Thank you very much in advance and very urgent !!