SAP Message TG063 - Name conflict for name & will cause activation error

TG063 : Name conflict for name & will cause activation error

140280Phase JOB_RADDRCHK in PREPARE module act.checks
133017Namespace conflicts w. upgrade to Release 4.x
98808DT121,D0751,DDERR 005 SAVEDDXX-2 in ABAP Dictionary
96905Error message TG063 in upgrade phase JOB_RADDRCHK