Hi RB ,
Thanks for you cooperation .
Has been able to access the shadow system with DDIC user and check the table T7AEPBS22 in t-code se11 status of the table is active but i unable Append structure on this table as indicated in SAP note 1881193 .
and i unable logon to this system with other user .
What can I do for Append structure on this table to continue the upgrade process .