OA redirect exception on adding new suppliers and exempting supplier from EMD

Hello,

While adding a new supplier to the EMD transaction an oa redirect exception is encountered but the supplier is getting added on revisiting the EMD transaction.

While exempting the supplier from paying EMD an oa redirect exception is encountered on clicking submit but the supplier is getting exempted on revisiting the EMD transaction.

Technical person said exchange rate is coming null. Please help me out with this issue.

Thanks,

Alka