VI01 during Returns STO

Hi All,

We are going live next week and i have an issue in using transportation transaction.

I have created return STO and created outbound delivery and the created shipment document, further it has been started and also end ,, now while creating Shipment cost using VI01 the values coming are in negative and therefore while doing settlement i am getting error that there net value is less then zero. Please help how to deal with this situation.

Appreciate your responses.

Regards,

Samuel