Hi James,
I'm trying to execute the following workflow described by Tom Thompson here (and very similar to what OP described)
Webhooks, Microsoft Flow and the ArcGIS Rest API – Automating Your Web GIS
However, I keep getting the following error when performing a GET request query operation. I was hoping you could help.
{"error":{"code":400,"message":"Cannot perform query. Invalid query parameters.","details":["Unable to perform query. Please check your parameters.","No where clause specified."]}}