Assumptions: Some objects exist in the list of objects to add that do not support Salesforce "PK chunking" for bulk data queries.
Scenario: Some SFDC out-of-the-box objects in the "Add Objects" list under Sync Settings could cause the data sync to fail if they are added to the consumer profile. There is no effect on custom objects (Conga and customer-specific) as they all support "PK chunking."
Workaround: As a workaround Conga can add objects as they are needed from the back end. Please contact Conga Technical Support if you have any questions regarding this limitation.