anchor.diff:  	Start = {startDateTime, "2017-01-01T00:00:00Z"},
   	End = {endDateTime, "2017-12-31T23:59:59Z"},
   	Valid = {validFor, {struct, [Start, End]}},
  -	Chars = [spec_timestamp(), spec_protocol(), spec_node(),
  -			spec_server_address(), spec_server_port(), spec_type_accounting(),
  +	Chars = [spec_protocol(), spec_node(), spec_server_address(),
  +			spec_server_port(), spec_type_accounting(),
   			spec_attr_username(), spec_attr_nas_ip(), spec_attr_nas_port(),
   			spec_attr_service_type(), spec_attr_framed_address(),
   			spec_attr_framed_netmask(), spec_attr_framed_routing(),
  
positive.code: 	Start = {startDateTime, "2017-01-01T00:00:00Z"},
  	End = {endDateTime, "2017-12-31T23:59:59Z"},
  	Valid = {validFor, {struct, [Start, End]}},
  	Chars = [spec_timestamp(), spec_protocol(), spec_node(),
  			spec_server_address(), spec_server_port(), spec_client_address(),
  			spec_client_port(), spec_type_access(),
  			spec_attr_username(), spec_attr_nas_ip(),
  			spec_attr_nas_port(), spec_attr_service_type(),
  
negative.code: 	Value1 = {struct, [Typ1]},
  	Value = {usageSpecCharacteristicValue, {array, [Value1]}},
  	[{struct, [Name, Desc, Conf, Value]} | Acc].
  
  %% @hidden
  spec_protocol() ->
  