Hello,
ArcPro/ArcGIS online uses the HERE network to provide catchments, routing, etc
https://doc.arcgis.com/en/arcgis-online/reference/network-coverage.htm
The HERE network has an API that allows you to run catchments
https://developer.here.com/documentation/isoline-routing-api/api-reference-swagger.html
I assumed that Arc would be using the HERE API, but I cannot make the catchments match. The parameters don't exactly line up (ArcOnline offers traffic options for a typical Monday at 8AM, while HERE you have to specify a date). No playing with the parameters will make them the same


I am wondering if anyone has any insight into this. I can post more code if it would be helpful
Thanks