Message Number list used by SAP ABAP Class CL_DMC_RSTRUCT_TREE (CL_DMC_RSTRUCT_TREE)
SAP ABAP Class CL_DMC_RSTRUCT_TREE (CL_DMC_RSTRUCT_TREE) is using
# Object Type Object Name Object Description Note
     
1 Message Number  DMCLG - 787 Source object &1 and target object &2 are not of same type
2 Message Number  DMCLG - 789 &1 is not an attribute of the object type &2