anchor.diff:  remove_ref(SessionId)
   		when is_binary(SessionId) ->
   	case catch ets:delete(?NRF_TABLE, SessionId) of
  -		true ->	
  +		true ->
   			ok;
   		{'EXIT', Reason} ->
   			{error, Reason}
  
positive.code: get_usu(#'3gpp_ro_Multiple-Services-Credit-Control'{'Used-Service-Unit' = []}) ->
  	[].
  
  
negative.code: 			_ ->
  				calendar:universal_time()
  		end,
  		case rate(ServiceType, ServiceNetwork, Subscriber, Timestamp,
  				Address, Direction, initial, SessionId, get_mscc(MSCC1)) of
  			{{MSCC2, ResultCode}, []} ->
  				{ok, MSCC2, ResultCode};
  			{{MSCC2, _}, PLA} when is_list(MSCC2), length(PLA) > 0 ->
  				case ServiceType of
  					32251 ->
  						{ok, JSON} = post_request_scur(SubscriberIds, SvcContextId,
  								SessionId, MSCC1, Location, initial, a)
  						{ok, JSON, PLA, MSCC2};
  					32260 ->
  						{ok, JSON} = post_request_ecur(SubscriberIds, SvcContextId,
  								SessionId, MSCC1, Location, Destination, initial, a),
  						{ok, JSON, PLA, MSCC2};
  				end;
  			{error, Reason} ->
  				{error, Reason}
  		end
  	of
  		{ok, JSON} ->
  