Checks after phase MAIN_SHDRUN/ACT_UPG were negative!

Dear All,

We are applying EHP6 upgrade for production installation.

During phase MAIN_SHDRUN/ACT_UPG the upgrade was stop with:

ERROR: Detected the following errors due to error summary in ACTUPG.ELG:
# /sapinst/SUM/abap/log/SAPA702EPU.VIP:
1EEDO519X"Table" "ACCIT" could not be activated
1EEDO519 "Srch Help" "H_AT30" could not be activated

1EEDO519 "Srch Help" "H_PAD_CN_PASSRULE" could not be activated
1EEDO519 "Srch Help" "H_T5EAE" could not be activated
1EEDO519 "Table" "ACCIT" could not be activated
1EEDO519 "Table" "V_T5NKO" could not be activated

# /sapinst/SUM/abap/log/SAPA702EPU.VIP:

   3 EDT012XActivate table "ACCIT"
   4 EDT402 Append structure "FKKRW_ACCITA" appended to table "ACCIT"
   4 EDT402 Append structure "ZACCIT_DLG" appended to table "ACCIT"
   4 EDT405 No customer or SAP include "CI_COBL" exists
   4WEDT191 Enhancement category "3" possible, but include or subty.
not yet classified
   3EEDT963 Field "KONTL" in table "ACCIT" is specified twice. Please
check

I had treid to logon shadow instance and modified ACCIT table.
But I get this massage.

SAP System has status 'not modifiab
Choose 'Display object' or 'Cancel'

Any idea how can I modified this shadow system?

Thanks

Reza