I have copied standard smart form LB_BIL_INVOICE as ZLB_BIL_INVOICE1 and attached it in NACE.
After that added a text field under INFO_REFERENZ_RECHNUNG as Reference.
Attached the field vbrk-xblnr.
But when Run the program value or vbrk-xblnr is not appearing.
Please suggest, what I have to do.