I have been exporting data from Force.com using bulk api without any issues except with a OpportunityStage object which throws an error stating - "Entity not supported by bulk API"
Here is a request I am making-
<?xml version="1.0" encoding="UTF-8"?><jobInfo xmlns="http://www.force.com/2009/06/asyncapi/dataload"><operation>query</operation><object>OpportunityStage</object><concurrencyMode>Parallel</concurrencyMode><contentType>CSV</contentType></jobInfo>

FYI this issues only occurs for this object - OpportunityStage from a list of objects I am querying. There may be a few more with this issue that I have not queried yet.

Exact error:
<?xml version="1.0" encoding="UTF-8"?><error
   xmlns="http://www.force.com/2009/06/asyncapi/dataload">
<exceptionCode>InvalidEntity</exceptionCode>
<exceptionMessage>Entity 'OpportunityStage' is not supported by the Bulk API.</exceptionMessage>

I have been exporting data from Force.com using bulk api without any issues except with a OpportunityStage object which throws an error stating - "Entity not supported by bulk API"
Here is a request I am making-
<?xml version="1.0" encoding="UTF-8"?><jobInfo xmlns="http://www.force.com/2009/06/asyncapi/dataload"><operation>query</operation><object>OpportunityStage</object><concurrencyMode>Parallel</concurrencyMode><contentType>CSV</contentType></jobInfo>

FYI this issues only occurs for this object - OpportunityStage from a list of objects I am querying. There may be a few more with this issue that I have not queried yet.

Exact error:
<?xml version="1.0" encoding="UTF-8"?><error
   xmlns="http://www.force.com/2009/06/asyncapi/dataload">
<exceptionCode>InvalidEntity</exceptionCode>
<exceptionMessage>Entity 'OpportunityStage' is not supported by the Bulk API.</exceptionMessage>