As a Salesforce change table links directly to the initiating entity record, and no all records within Salesforce may be linked to, The list of entities available for selection has been limited to the following entities:

The list of eligible change entities is stored in the SalesForceChangeEntity table in the SmartConnect database. If amendments are made to the table, and SmartConnect restarted the new entries may be seen as valid entities and then selected as change entities. However there is no guarantee that amended entities will work as change entities within SmartConnect as the change table may not be able to link to the record type.