If you are having trouble importing items with AA codes and are getting the following message:
An Item with the same key has already been added.
Here are some things to check:
1. The AA Dimension exists
2. The AA Code exists
3. The AA Dimension's class is linked to the GL Account from the same distribution
4. The current user does not have permissions to use the AA code
Another reason this message could happen is if the exchange rate date is not setup as a spot rate in GP.