.heic is an image file format used by Apple since 2017. Both Apple and Microsoft support this file in their operating systems. It is time for ArcGIS Online to allow this file type as a feature attachment. This would solve the following problem with Survey123 as well as general support for this attachment type by any REST client.
Problem: Submitting a survey with an HEIC image attachment in Survey123 for ArcGIS fails with Send E...
