This error "Not the correct Business Unit!" is suspicious, I can't see the code that throws this error.
The rest of the error suggests that a flexfield combination could not be validated.
I suggest you gather full log and raise a SR with us.
Thanks a lot for your response. Can you please let me know if this exception is going to prevent closing the period?
It will as you can 't distribute your costs due to an AA error. Expenditure item 25130228 will have a cost distribution rejection stamped against it.
This error might be the user error ie. customized code written to validate a particular record.
You can check the code written to understand the validation to get to the root cause of the error.
A common error while importing time cards to PA is “PA_EXP_ORG_NOT_ACTIVE” which is the employee had entered time for a particular organization and the assignment is another assignment.
Thanks & Regards,