Yes, there would need to be an ItemType table for this federated item since it is being used in relationships where it could be the source or related item.
The table would need to store:
1. The primary key ID for the item within Aras Innovator (to support relationships)
2. A foreign key to the actual remote item ID
3. A status flag to track if the remote item data has been synchronized recently.
This allows Aras to manage the relationship mappings while still linking to and synchronizing the actual remote item data.