No account assignment to customer order (not active in COArea 3361, yr 2010

Hi everybody,

When I am doing Individual PO with below settings

1. create an material NO with type FERT and item category BANC ;

2. create a sales order via VA01;

3. create an PO via ME21N with ref to PR;

4. but system return an error

message like this :

No account assignment to customer order (not active in COArea 3361,

year 2010).

Messageno. KI 162

Diagnosis

You posted a customer order even though sales orders is not active in

controlling area 3361, fiscal year 2010.

System Response

The posting is invalid.

Procedure

Activate sales orders in CO configuration for fiscal year 2010.

To use production to order without updating to CO, you can deactivate

this error message. The work area is KI,message number 162.

How can I do with it ?

Thanks,

Nagesh