Message Number list used by SAP ABAP Class CL_GM_BDGT_LY_HEADER (GM budget header)
SAP ABAP Class CL_GM_BDGT_LY_HEADER (GM budget header) is using
# Object Type Object Name Object Description Note
     
1 Message Number  GRANTMGMT - 646 Version &1 is not valid
2 Message Number  GRANTMGMT - 647 Versions must be different