Here is the description of response attributes, which returns to the form of JSON.

Attributes	Description
recordsTotal	Total number of attendees present
recordsFiltered	Number of attendees present in the current API response
data	List of JSON objects. Each object represents one attendee
firstName	This field returns First name of the user.
lastName	This field returns Last name of the user.
email	This field returns Email of the user.
photo	This field returns photo of the user.
userId	This field returns user id.
columnSelectionData	Data of custom columns that have been selected on the "Attendee Analytics" page.

Here is the possible error messages, which return if any condition gets failed or required data is missing for processing.

Error Code	Error Description
200	Returns all attendee details.
401	You are not authorized to view the resource.
403	Accessing the resource you were trying to reach is forbidden.
404	The resource you were trying to reach is not found.
4030201	Not Event Host