Data request for Azure Resource usage api failed

Question

Using Resource usage Api to calculate resource consumption cost. Sometimes exception occurred as

"The data requested has not yet been processed. Please try again in 5 minutes"

Code used:

string usageUrl = String.Format("{0}/{1}/{2}/{3}", "https://management.azure.com","subscriptions", subscriptionId, "providers/Microsoft.Commerce/UsageAggregates?api-version=2015-06-01-preview&reportedstartTime=" + startDate + "T09%3a00%3a00%2b00%3a00&reportedEndTime=" + endDate + "T" + endTime + "%3a00%3a00%2b00%3a00&aggregationGranularity=Hourly&showDetails=true");

HttpWebRequest usageRequest = (HttpWebRequest)WebRequest.Create(usageUrl);

usageRequest.Headers.Add(HttpRequestHeader.Authorization, "Bearer " + accessToken);

usageRequest.ContentType = "application/json";

HttpWebResponse responses = (HttpWebResponse)usageRequest.GetResponse();

Stream receiveStreams = responses.GetResponseStream();

StreamReader readStreams = new StreamReader(receiveStreams, Encoding.UTF8);

var usageResponse = readStreams.ReadToEnd();

Inputs:

startDate - 2017-01-07,

endDate - 2017-01-10,

endTime - 09(hour).

Current UTC date - 2017-01-10(yyyy-MM-dd)

Current UTC time - 09:15:25(hh:mm:ss)

No problems with the format. This code works fine if endTime is passed as "08".