Hi Shilendra,

Use the PBE PAW potentials, and then simply add GGA=PS (for PBEsol) or GGA=AM (for AM05) in your INCAR file. 

Good luck,

Ricardo.

Hi Shilendra,

Here you can find the complete list of functionals supported by VASP:

https://cms.mpi.univie.ac.at/wiki/index.php/GGA

If I can integrate, if you are using VASP 5.x INCAR with the GGA tag and IVDW tag, this leads to a conflict in VASP 6.x:

```

| XC_FOCK_READER: Only one functional can be specified with the GGA |

| or METAGGA tag.

```

You need to use XC command and adapt your INCAR.

I am still testing, so I can not provide more information