Values are showing up in the "Status Column" while retrieving data from PI OLEDB

Hi All,
I am observing a weird problem while retrieving data of a PE tag from PI server using PI OLEDB (MMC & SQL Commander), the values of tag are showing up in the "Status Column" and I observed this only for few tags . Here I am using the picomp table to read data from PI server.

If I execute this query for other tags production tags or PE tag then I see the data  "value column" only.

Please see the attachments for more understanding .

Thanks in advance.