sap b1 - Tax parameter missing

Hello everyone,

We are using sap business one 2005B.

Just from few days, we are not able to create sales order ,sales quotation. whenever we specify the tax code, it says rate code for tax parimeter is missing. we have checked in adminsitration > financials > tax .... The tax code, rate is defined properly. there are no changes done.

Thanks

Mogis