Error Occurred During the Posting - Cash Document Posting (DPM)

Dear Experts,

while trying to Post the Cash Documents  from DPM session we got the below message :

we have tried to check the application log by pressing on the button in the screen "application log"

but we get nothing just the same message that appears on the screen we tried to repost to get the details of the error but we get the same message .

So where to find more details about the errors cause my problem that i cant get more info about the error to resolve it.

any help is appreciated , Thanks In advance

Regards.

Ahmed Salam.

Basis Team.