Hi Barb:

If you have BR 8.1B (090514), there is a new feature that might help prevent this problem (if it is caused by 2 users simultaneously retrieving a batch).

The Company Profile now allows you to determine what happens immediately after logging in. Using this feature you can prevent the message about batches to be retrieved (look at the Options tab and remove any check-marks on "Warn-Retrieve batches" and "Auto-Retrieve batches").

Then assign the task of retrieving sub-ledger batches to just one user.