Create a simple EJB Project named "Test" and add the following classes to it package com.test; import javax.persistence.MappedSuperclass; import javax.persistence.Version; @MappedSuperclass public class BaseEntity { @Version private int version; public int getVersion() { return version; } public void setVersion(int version) { this.version = version; } } package com.test; import javax.persistence.Column; import javax.persistence.Entity; import javax.persistence.GeneratedValue; import javax.persistence.GenerationType; import javax.persistence.Id; import javax.persistence.Table; @Entity @Table(name = "CUSTOMER") public class Customer extends BaseEntity { @Id @Column(nullable = false) @GeneratedValue(strategy = GenerationType.IDENTITY) private int customerid; private String customername; private String addressline1; private String addressline2; private String city; private String state; private String country; private String pincode; private String agentname; public int getCustomerid() { return customerid; } public void setCustomerid(int customerid) { this.customerid = customerid; } public String getCustomername() { return customername; } public void setCustomername(String customername) { this.customername = customername; } public String getAddressline1() { return addressline1; } public void setAddressline1(String addressline1) { this.addressline1 = addressline1; } public String getAddressline2() { return addressline2; } public void setAddressline2(String addressline2) { this.addressline2 = addressline2; } public String getCity() { return city; } public void setCity(String city) { this.city = city; } public String getState() { return state; } public void setState(String state) { this.state = state; } public String getCountry() { return country; } public void setCountry(String country) { this.country = country; } public String getPincode() { return pincode; } public void setPincode(String pincode) { this.pincode = pincode; } public String getAgentname() { return agentname; } public void setAgentname(String agentname) { this.agentname = agentname; } } package com.test; import javax.persistence.Column; import javax.persistence.Entity; import javax.persistence.GeneratedValue; import javax.persistence.Id; import javax.persistence.Table; @Entity @Table(name = "SEASON") public class Season extends BaseEntity { private int seasonid; private String seasondisplayname; @Id @Column(nullable = false) @GeneratedValue public int getSeasonid() { return seasonid; } public void setSeasonid(int seasonid) { this.seasonid = seasonid; } public String getSeasondisplayname() { return seasondisplayname; } public void setSeasondisplayname(String seasondisplayname) { this.seasondisplayname = seasondisplayname; } } 2. Deploy this jar to Jboss 7.1.1 server. Deployment will fail.