anchor.diff:  	HostUrl = ?config(host_url, Config),
   	Accept = {"accept", "application/json"},
   	ContentType = "application/json",
  -	RestUser = ct:get_config(rest_user),
  -	RestPass = ct:get_config(rest_pass),
  -	Encodekey = base64:encode_to_string(string:concat(RestUser ++ ":", RestPass)),
  -	AuthKey = "Basic " ++ Encodekey,
  -	Authentication = {"authorization", AuthKey},
   	Request = {HostUrl ++ "/serviceInventoryManagement/v2/service",
  -			[Accept, Authentication], ContentType, RequestBody},
  +			[Accept, auth_header()], ContentType, RequestBody},
   	{ok, Result} = httpc:request(post, Request, [], []),
   	{{"HTTP/1.1", 201, _Created}, Headers, ResponseBody} = Result,
   	{_, "application/json"} = lists:keyfind("content-type", 1, Headers),
  
positive.code: 	HostUrl = ?config(host_url, Config),
  	Accept = {"accept", "application/json"},
  	ContentType = "application/json",
  	RestUser = ct:get_config(rest_user),
  	RestPass = ct:get_config(rest_pass),
  	Encodekey = base64:encode_to_string(string:concat(RestUser ++ ":", RestPass)),
  	AuthKey = "Basic " ++ Encodekey,
  	Authorization = {"authorization", AuthKey},
  	OfferId = ocs:generate_identity(),
  	P1 = #price{name = "Installation", start_date = erlang:system_time(?MILLISECOND),
  			type = one_time, amount = rand:uniform(1000)},
  
negative.code: 			PageSize - 1
  	end,
  	HostUrl = ?config(host_url, Config),
  	Accept = {"accept", "application/json"},
  	RequestHeaders1 = [Accept, auth_header()],
  	Request1 = {HostUrl ++ "/usageManagement/v1/usage?type=AAAAccessUsage", RequestHeaders1},
  	{ok, Result1} = httpc:request(get, Request1, [], []),
  	{{"HTTP/1.1", 200, _OK}, ResponseHeaders1, Body1} = Result1,
  