Delivering Plant In SO is Defaulted wrongly

Hi Everyone,

There is some issue with the delivering plant in the SO created.

Scenario:

While creating an SO when all details like ship To , Sold To , material are filled the delivering plant is picked correctly as maintained in the material master. But when I save the SO error prompts "Company Code not assigned" . On closing this error the SO gets saved . On displaying the SO delivering plant is something different.

eg

Material 1234

Delivering pant : PLN1 ( Maintained in MM)

While creating SO the delivering plant is PLN1, but once the SO is saved with error "Company code not assigned" and display the SO delivering plant is ZPNW

Basically ZPNW is defaulted.

Kindly let me know if there is an solution for this.

Thanks,

Maruti