Expense Report Export does not create Invoice in AP

Question

Hello,
I have created several expense reports in AP (Running EBS R12, I am not using iExpenses), but when I use the Expense Report Export request, the invoices are not created. I have looked online and found some plausible solutions. None of them have worked: I've made sure the Employee payment method is set up; the Usage rules for payables are also set up for Employee Expenses in the payment processing transaction type. In the Payables Option screen, I have selected the Automatic Employee as a Supplier option.
Here's the Expense Report Export log:
Payables: Version : 12.0.0
Copyright (c) 1979, 1999, Oracle Corporation. All rights reserved.
APXEXPER module: Expense Report Export
Current system time is 29-APR-2013 11:09:53
**Starts**29-APR-2013 11:09:54
**Ends**29-APR-2013 11:09:55
Start of log messages from FND_FILE
Begin Receipts Management - Holds
Process Hold Each Scenario
Determine whether to place Holds
Process Hold All Scenario
Determine whether to place Holds
Process Hold BothPay Scenario
Determine whether to place Holds
Process Obsolete Holds
Obsolete Holds
Obsolete Both Pay Holds
Begin Processing Individual expense reports
Fetching expense report...
Expense Report Number : **110**
Transfer Attachments option(Y/N):Y
Fetching expense report...
Expense Report Number : **REEMBOLSO 25ABR2013**
Transfer Attachments option(Y/N):Y
Fetching expense report...
Expense Report Number : **TEST_ASTRID_EXPENSE**
Transfer Attachments option(Y/N):Y
Fetching expense report...
Expense Report Number : **TEST_EXPENSE_AGSV**
Transfer Attachments option(Y/N):Y
Fetching expense report...
Expense Report Number : **101**
Transfer Attachments option(Y/N):Y
Fetching expense report...
Credit Card Expenses Fetched = 0
Credit Card Invoices Created = 0
Call Payables Open Interface
Expenses Fetched = 5
Invoices Created = 0
End of log messages from FND_FILE
Executing request completion options...
------------- 1) PRINT   -------------
Printing output file.
Request ID : 4105067      
Number of copies : 0      
Printer : noprint
Finished executing request completion options.
Concurrent request completed successfully
Current system time is 29-APR-2013 11:09:55
What else do I need to do? Am I missing something?
Thanks in advance,
Astrid

Answer 1

I found the answer and I am posting it here in case someone else needs it:
You need to run the Expense Report Export with the Debug Switch on (you can find this under the request's parameters). When the output is ready, just select "View Log..." and search for the "REJECT CODE"; it will let you know what went wrong with your expense report. In my case, the suppliers I was using had invalid liability accounts. As soon as I updated them, the invoices were generated.
Regards,
Astrid