Hello,
A purchase order has been done from a project and a prepayment has been issued on it.
The currency was wrong on the purchase order and the prepayment has to be removed. The purchase order was recalled from the workflow to remove the prepayment. The following message appears when trying to remove the prepayment 'Voucher number APDWPV000000209, transaction type Project - cost, and account number 150156001-PID000006195 can't be reversed.'

Voucher on the purchase order

Posted transaction on the project

Is there a way to remove the prepayment and cancel the purchase order?
Cheers,
Rina