API Parallel call and how to make partial fail

Question

Hi Team,

 

I have parallel call as showed below, at present if other API is failed for one AccountID, then complete call considering as fail. Could you please let me know how I can make the call better, Even if one AccountID is failed still I need to continue with final response for the success AccountID.

public async Task<List<CreditCardSummary>> Process(Dictionary<string, string> permanentIds)
{
List<Task> tasks = new List<Task>();
List<CreditCardSummary> creditCardSummaryServiceList = new List<CreditCardSummary>();
foreach (var permanentId in permanentIds)
{
CreditCardSummaryRequest request = new CreditCardSummaryRequest()
{
AccountID = permanentId.Key, // "00001528830094858440"
AccountToken = permanentId.Value //token
};
tasks.Add(ModelServiceProcessing(request).ContinueWith(
(TResult) => creditCardSummaryServiceList.Add(TResult.Result)));
}
await Task.WhenAll(tasks.ToArray());
return creditCardSummaryServiceList;
}
public async Task<CreditCardSummary> ModelServiceProcessing(CreditCardSummaryRequest request)
{
//deleted some code for constructing header
var restServiceResponse = await restClient.Post(ccStatusInfoUrl,request ,true, header); // this is the code to make a call to other API
var restServiceResponseInformation = await restServiceResponse.Content.ReadAsStringAsync();
if (!restServiceResponse.IsSuccessStatusCode)
{
throw new CallFailureException($"Call has been failed");
}
context.LogQueue.AddDebugMessage($"ICS CardSummary success for PId ending - {Common.GetLastFour(request.AccountID)}");
var response = Common.DeSerializeObject<CreditCardSummary>(restServiceResponseInformation, false);
return response;
}