When the batch contains all the items you want, you must close it ready for export.
Once you have closed a batch, you can no longer add items to it or remove items from it.
To close a batch:
On the Export Management tab, select the line corresponding to the batch to display the batch contents.
Verify that the batch has all the items you want.
If an option to update the accounting codes is displayed (because they have changed - see Updating Accounting Codes), select the update check box to update the codes, otherwise leave it empty.