CO-PC: Moving price = Price + Overhead

Dear Experts,

Need to know if I can apply a Overhead at a Raw materials. When we create a material requires us to quote a price moving.

We inform you value, but then not let us calculate the price +Overhead in that month.

The message displayed is:

'The company has conducted at least one release of a plan costing in the current period.'

In the period following the calculation leaves us with CK11N.

Is it possible to perform this operation? How can we do?

We need the raw material has a Overhead by the value of customs and transport

Thanks in advance

Mary