NIS users unable to login to NIS Slave

Hi,

I have setup both NIS Master and NIS Slave and all are working fine except 1 problem. I have a NIS user account named NISuser1 and I can login to this account on the NIS Master server but on the NIS Slave...I'm not able to login to this account. Why is this happening only on the NIS Slave?

Both NIS Master and NIS Slave are running on RHEL v6.6. Please let me know what are the things to check.