problems with 'RV_INVOICE_DOCUMENT_READ'

Question

I'm trying to use the 'RV_INVOICE_DOCUMENT_READ' function to get some price data from a bill. Checking the function in the SE37 works fine, it retrieves the data I need. However, when I try to use the function in a smartform, the function returns nothing. This is the code I have:

DATA: LV_VBRK LIKE VBRK.
LV_VBRK-VBELN = VL_VBELN.

DATA:
gs_komv TYPE komv,
gt_komv like komv occurs 0 with header line,
gs_vbpa TYPE vbpavb,
gt_vbpa like vbpavb occurs 0 with header line,
gs_vbrk TYPE vbrkvb,
gt_vbrk like vbrkvb occurs 0 with header line,
gs_vbrp TYPE vbrpvb,
gt_vbrp like vbrpvb occurs 0 with header line.

CALL FUNCTION 'RV_INVOICE_DOCUMENT_READ'
 EXPORTING
   KONV_READ = 'X'
   VBRK_I = LV_VBRK
 TABLES
   xkomv = gt_komv
   xvbpa = gt_vbpa
   xvbrk = gt_vbrk
   xvbrp = gt_vbrp.

When I check gt_komv, it contains zero records, but when in the SE37 it returns 28 records. What am I doing wrong?

Answer 1

Where does the VL_VBELN come from? The domain behind the field has alpha conversion set.

SE37, when calling FMs does input alpha conversion when processing parameters, so in ABAP you need internal format when passing to it.

More about alpha conversion here.