mixed currencies allowed while making manual payment ?

hi all ,

for one of the wendor , prepayment is done in local currency (it is advance payment entry ) , positive line already paid , now outstanding is only -ve line .

2 way match is done , using foregin currency .

now user wants to set off negative prepayment line with foreign currency invoice .

when i tried in the system , it shows error , mixed currencies are not allowed .

any other suggested way ? or any other set up in JDE i need to check ?

thank you