Message Number list used by SAP ABAP Program MV12AF0F (Example for a search help exit)
SAP ABAP Program MV12AF0F (Example for a search help exit) is using
# Object Type Object Name Object Description Note
     
1 Message Number  VK - 770 Switch: Field &2 cannot be used (table &1)
2 Message Number  VK - 801 Select an allowed field
3 Message Number  VK - 804 Unable to transfer fields from the reference table
4 Message Number  VK - 864 System error: Field &1 in table &2 not found