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Unable to track my pf status

I applied for transferring my PF to my new organization which is located in chennai... I have not received any update on the same and i am unable to track. When i try to check my PF status, it shows the PF number is not valid. i have the same PF number in all my pay slip. I was working for same organization for more than two and half year. please help me to proceed on the same...