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the number of attendees exceeds the maximum number of attendees supported

Hey all, 

I've created a few months ago an app. 

There I did the following query (used a gallery --> OnSelect): 
Office365.FindMeetingTimes({RequiredAttendees: R1; Start: TextInput1; End: TextInput2; MeetingDuration: TextInput4; MinimumAttendeePercentage: 1; ActivityDomain: "Unrestricted"; IsOrganizerOptional: true})


It worked without problems, but actually I get the following error and have no idea how to fix it...:

Fehler bei "Office365.FindMeetingTimes": {
  "error": {
     "message":"The number of attendees exceeds the maximum number of attendeees supported", 
           "message":"The number of attendees exceeds the maximum number of atendees supported"



Community Support
Community Support

Hi @m_hdcbs,

Could you please share a bit more about the R1 that you mentioned?

The error message seems to tell that the number of Attendees that you provided for the RequiredAttendees property has reached the maximum number limit.

In addition, Outlook itself does not have a method to limit the number of meeting attendees. You can configure Exchange server to limit maximum recipients for all messages. Please check the following article for more details:

Please check if you have set the Recipients limits within your Exchange server. More details about setting Recipients limits within Exchange server, please check the following article:


Best regards,


Community Support Team _ Kris Dai
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