anchor.diff:  			Uri;
   		false ->
   			undefined
  -	end. 
  -
  +	end.
  +
  
positive.code: 			undefined
  	end.
  
  -spec get_option(Option) -> Result 
  	when
  		Option :: atom(),
  		Result :: term().
  %% @doc Get the Nrf endpoint uri.
  get_option(Option) -> 
  	Options = case application:get_env(ocs, diameter) of
  		{ok, [{acct,[{_, _, Oplist}]}]} ->
  			Oplist;
  
negative.code: 			{error, Reason}
  	end.
  
  -spec format_subs_ids(Subscribers) -> SubscriptionId
  	when
  		Subscribers :: map(),
  		SubscriptionId :: [SubscriptionIds],
  		SubscriptionIds :: MSISDN | IMSI,
  		MSISDN :: string(),
  		IMSI :: string().
  %% @doc Format subsriber ids for nrf request.
  format_subs_ids(#{"msisdn" := MSISDN, "imsi" := IMSI}) ->
  	["msisdn-" ++ binary_to_list(MSISDN),
  			"imsi-" ++ binary_to_list(IMSI)];
  format_subs_ids(#{"msisdn" := MSISDN}) ->
  	["msisdn-" ++ binary_to_list(MSISDN)];
  format_subs_ids(#{"imsi" := IMSI}) ->
  	["imsi-" ++ binary_to_list(IMSI)].
  
  -spec get_destination(ServiceInformation) -> RequestedPartyAddress
  	when
  