Message Number list used by SAP ABAP Class CL_RSQ_ISET_APPEND (Append Utilities: Infosets)
SAP ABAP Class CL_RSQ_ISET_APPEND (Append Utilities: Infosets) is using
# Object Type Object Name Object Description Note
     
1 Message Number  RSO - 563 Only one append can exist for each switch
2 Message Number  RSO - 564 Append &1 and append &2 are in the same switch (&3)
3 Message Number  RSO - 565 Append must be assigned to a switch (development class: &1)
4 Message Number  RSO - 577 Append cannot be assigned to main object