Enhancement for ME21N t-code ?

Dear ABAP Experts..,

        I have a requirement that in ME21N t-code Delivery / Invoice tab there is a field called Payment Terms. If user select Payment Terms as '0010'

then he wants to new screen which have different entries .

     How can i do this issue when the user is selected Payment Terms as '0010' to generate new Tab in header part ?

Thaks & Regards.

K. Chinna..!