Gpf account number

hi ,my name is shaik MAHAMMAD SADIQ.

2003 I was selected for police constable and got gpf account.

Later I was selected for station fire officer in 2010.my question is my gpf account number is 165165pol,but fire service personnel gpf is fps

Whether I have to change code from pol to fps.,

Is all benefits regarding benefits would come after retirement, is iam really eligible for pension scheme.