with qDocumentRolesEdit do
  begin
    Transaction.StartTransaction;
    try
      ParamByName('AOPERATION').Value := 2;
      ParamByName('ID').Value := cdsDocumentRoles.FieldByName('ID').Value;
      ParamByName('ID_DOCUMENT_TYPE').Value := Null;
      ParamByName('ID_DOC$ROLE_TYPE').Value := Null;
      ParamByName('STATE').Value := Null;
      ParamByName('IS_PARENT').Value := Null;
      ParamByName('IS_TRUSTEE').Value := Null;
      ParamByName('IS_AUTHORIZED_REPRESENTATIVE').Value := Null;
      ParamByName('IS_PROHIBITION').Value := Null;
      ExecQuery;

      Transaction.Commit;
    except
      Transaction.Rollback;
    end;
  end;