Sales orders/Credit orders getting error invalid parameters

Hi Team,

I have an issue where when i am trying to create credit orders or Sales order if i override the unit price , i am getting invalid parameters error.

1. I am getting this error only if the ship to & Sold to is a foreign customer .

2. if Item does not a have unit price while creating a sales order, if i try to override the unit price then i am getting invalid parameters error.

Could you please check .

Thanks,

Venkatesh