If you create a Custom Object in Eloqua with the same name as a standard Eloqua entity or you create two Custom Objects with the same name, Scribe Online cannot load metadata. The following error is returned when you open a map using an Eloqua Connection.
Unable to retrieve metadata
An item with the same key has already been added.
For example, Eloqua has a standard entity named Campaign, if you create Custom Objects named Campaign1 and Campaign2, an error is generated.