Possible Bug in Graph Rest API

Question

Dear,

I'm facing to a bug, for example I tried to use the 15 november 2023 as a datetimeoffset. I keep the bug stack trace in attached file277037-error.txt

with this following code:

TimeConstraint timeConstraint = new TimeConstraint  
            {  
                TimeSlots = new List<TimeSlot>()  
                {  
                    new TimeSlot  
                    {  
                        Start = new DateTimeTimeZone()  
                        {  
                            DateTime = startDate.UtcDateTime.ToString(),  
                            TimeZone = TimeZoneInfo.Utc.ToString()  
                        },  
                        End = new DateTimeTimeZone()  
                        {  
                            DateTime = endDate.UtcDateTime.ToString(),  
                            TimeZone = TimeZoneInfo.Utc.ToString()  
                        },  
                    }  
                }  
            };  

 MeetingTimeSuggestionsResult meetingTimeSuggestionsResult = await _client.GraphServiceClient.Users[organizerEmail]  
                .FindMeetingTimes(attendeeBases, locationConstraint, timeConstraint, duration,  
                null, null, null, minimumAttendeePercentage)  
                    .Request()  
                    .Header("Prefer", "outlook.timezone=\"UTC\"")  
                    .PostAsync();  

bellow the start and end datetimeoffset provided for time constraint:

If I try for example 08/01/2023 (so the 8 january 2023) the FindMeetingTimes return to me 01/08/2023 like a day switch to month ... and If I call "Month" on the date time offset response, I got 8 months ! Is normally ? How I can make to work with datetimeoffset plz ?

Thank a lot and have a nice day
Adrien

Answer 1

Hi @Adrien Ruffie ,

Thanks for reaching out.

I could reproduce your issue if I pass the date value in "yyyy-dd-mm" format and is not in expected format. The expected date format should be "yyyy-mm-dd". Please refer the link for more details: https://learn.microsoft.com/en-us/graph/api/user-findmeetingtimes?view=graph-rest-1.0&tabs=http

Error response same as like you with date format: "yyyy-dd-mm"

Success response with date format: "yyyy-mm-dd"

I would suggest you to please set the date format values in expected format in request Payload.

Hope this helps.

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