Hi Mahmoud,
You should consider error some lines above because here(X070) system expects to doesn't see any WT into IT table. If you open IT of X070 you will see at least WT /840.
One of PCRs before X070 must not keep /840 in IT table. So you should change its processing class(PC)
Just now I don't have access to any SAP system to say what should put in which PC but I am sure you can fix it by considering above PCRs to find in which one system remove similar WTs like /8xx from IT. Then change the same PC with the same amount you have for one of them.
Regards,
Omid