Problem in Enhancement to FBL5N

Dear Friends,

I have to enhance customer name in fbl5n output list.

i append that field in structures RFPOS, RFPOSX AND execute the program RFPOSXENTEND.

that field is appended successfully in the final structure RFPOSXEXT.

But while debugging it is not showing in the final structure in alv grid display 'it_items".

in this it is showing only 154 fields but in the structure RFPOSXEXT has 155 fields.

Can anyone help in this regard.