The Source table does not have the class export model name

The FeederID field on the Source table does not have the field export model name

The class or field export model name is not set in the Network Adapter options

The feature class (usually DynamicProtectiveDeviceBank) related to the Source object does have the class export model name or is missing field export model names

The feature (usually DynamicProtectiveDeviceBank) related to the Source object for a feeder is not selected

The feature (usually DynamicProtectiveDeviceBank) related to the Source object does not have phase designation populated

There is a busbar or some other special feature near the head of the feeder that does not have the export model name or is not selected