Get undeclared identifier error IData Abstract Local Service Access

Remoting SDK
,
1

I am trying to create a method that creates assignsa LocalDataAdapter a Server instance, but i can manage to use
IDataAbstractLocalServiceAccess

this is my method

Procedure TBaseDataService.ConnectDatabaseLayerToAdapter
begin
DataBaseLayerAdapter.ServiceInstance := DatabaseLayerService as IDataAbstractLocalServiceAccess
end

but i get error : ’ Undeclared identifier: ‘IDataAbstractLocalServiceAccess’

note: i already imported TDALocalCommand

2

this interface is declared in uDALocalHelpers.pas