Shipment cost type for a particular shipment type

Hi All,

We have assigned a particular Shipment cost (0001) to a particular Shipment type (0001) in the configuration. Please find the menu path below.

IMG -> Logistics Execution -> Transportation -> Shipment Costs -> Shipment Cost Document -> Shipment Cost Relevance and Default for Shipment Cost Type - > Assign Shipment Cost type to the Shipment type.

I have created a Shipment in VT01N with the Shipment type 0001. So Shipment cost type 0001 assigned for that.

But when I am creating Shipment cost document in VI01, system accepting even if I enter 0002 Shipment cost type.

I want system to accept only the Shipment cost type 0001 for the shipment type 0001. How to control this.

Please explain.

Regards,

Raja Durai