Transactional replication error 8102

I am getting below error while initializing push transactional replication using backup. We are using SQL 2008R2 SP2 on both sides.

Command attempted: if @@trancount > 0 rollback tran (Transaction sequence number: 0x00093D2B00006137000100000003, Command ID: 1)

Error messages: Cannot update identity column 'id'. (Source: MSSQLServer, Error number: 8102) Get help: http: //help/8102

I have checked all tables and none of the article table have identity specified, where its specified its marked "not for replication"

Thanks, VP