I am not on a system today, but I see that your BGR00 structure is totally without field mapping.
Make the fields visible, select from menu Extras > Layout. You get then a pop-up to define the layout
I prefer and recommend to set each field in the layout active
Image may be NSFW.
Clik here to view.
(more infos on preparing the LSMW in my blog LSMW Material master by BAPI method - Part 1 )
As said I am not on system and cannot verify my answer, hence I recommend to check existing records in the condition tables, as I think the field BKOND2-VAKEY must not be without content
