While creating New Manage Property, not able to get list columns options in sharepoint 2010?

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SharePoint2010

I am creating new Manage Property in sharepoint 2010, while assigning it to list column, the list columns are not available in add mapping fields.

How i get all list columns in add mapping list?

I did full crawl after that not populate into 'select a crawl property' section.
I also find prefix with ows_ but it not there.


Any approach would helo lot!

Thanks.