Using Entity Framework 5.0 map relationship between parent and children when ID are Guids with newsequentialid() -

i have 2 classes 1 many relationship.

public partial class client {     public client()     {         this.client_local = new hashset<client_local>();     }      public system.guid guid { get; set; }     public string name { get; set; }      public virtual icollection<client_local> client_local { get; set; } }  public partial class client_local {     public system.guid localguid { get; set; }     public system.guid guid { get; set; }     public string cultureid { get; set; }     public string localname { get; set; }      public virtual client client { get; set; } } 

the mapping classes are:

class clientmapping : entitytypeconfiguration<client> {     public clientmapping()     {         this.haskey(entity => entity.guid); //as newsequentialid()         this.totable("client");          this.property(entity => entity.guid).hasdatabasegeneratedoption(databasegeneratedoption.identity);     } }  class client_localmapping : entitytypeconfiguration<client_local> {     public client_localmapping()     {         this.haskey(entity => entity.localguid); // as newsequentialid()         this.totable("client_local");          this.property(entity => entity.localguid).hasdatabasegeneratedoption(databasegeneratedoption.identity);         this.hasrequired<client>(e => e.client).withmany(p => p.client_locals).hasforeignkey<guid>(c => c.guid);     } } 

i can create new instances of client class , save them database successfully. when try , add client_local class , save database "a dependent property in referentialconstraint mapped store-generated column. column: 'guid'.".

the key fields generated in sql newsequentialid performance reasons. , there foreign key relationship between client_local.guid , client.guid.

retrieving data database works above mapping classes. appreciated.