VAT Not Allowed with Currency Code

Dears,

A issue was happened when I try to create 3 ways match voucher. I found the issue caused of the 'VAT rate' for the foreign voucher. Generally for the foreign voucher (the local currency is RMB), the VAT rate code is not allowed in JDE. As we know the VAT rate code is extracted from supplier master (address book) and defaulted in AP voucher, so if we create a supplier with VAT rate and the supplier is a foreign supplier. AP voucher will extract the VAT rate automatically and show the error message. How can we avoid the issue ?