I am creating a proof of concept using a trial subscription account.
I have created a Survey123 survey and have had a few people fill it out.
I now need to retrieve the survey results using a REST call.
Success of this POC will lead to a large investment of ArcGIS, so any assistance that could be provided is appreciated.
Data submitted by Survey123 is stored in a feature service. Data access is by the standard REST API - Query (Feature Service/Layer)—ArcGIS REST API: Services Directory | ArcGIS for Developers .
The quickest way to get started would be to go to the 'My Content' section of your ArcGIS Online account and look at the feature layer/service's details (you will find it in a folder named 'Survey-<Survey Name>'). Click on the 'Service URL' link there to get to the REST API interface.
Additionally, I would encourage you to check out the Survey123 for ArcGIS group in GeoNet - we have a very active community willing to help!