Scanning data file …
ERROR on proc 0: Unknown identifier in data file: 1 1 560 901
 MPI Abort by user Aborting program !
 Aborting program!
p0_3960: p4_error: : 1
This is the error when i run the program . Error is in the section of Bonds.How can i overcome this error
That line appeared when LAMMPS was expecting a text string
like Bonds or Atoms. So something is messed up in your data file.