Regarding invoice smartform
I have seen invoice smartform step by step procedure in the following link.
But when Iam trying this smartform, we dont have predifined types like y_ty_vbrk in our server. So, can anyone tell me what are thedeclarations to be maintained in form interfaces and global variables and what shoulb be written in the types declaration. In the link,in one screenshot we have
OPERAND . but in our server we have INTERNAL TABLE. what should we have to write there for activating the smartform without errors.